#RUNAWAY #Diesel #Engines
Diesel engine runaway is a rare condition affecting diesel engines, in which the engine draws extra fuel from an unintended source and overspends at higher and higher RPM and producing up to 10 times the engine's rated output until destroyed by mechanical failure or bearing seizure through lack of lubrication.
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Many diesels runaway because they feel abused by their owners.
Lol ha ha
😄😄😄
diesel runaway occurs because the hydrocarbons enter again into the combustion chamber, so the engine seems to get 2 times fuel supply
@@sajanzunnurain88 way to ruin a good joke Dr. Serious. I'm sure that the vast majority of people who liked this probably understand how it works.
@@the_borax_kid2233 lol, they never had it happen in real life and it shows.
Run aways are bad enough but those first guys with the old hit and mis motor are nuts. I wouldn't want to be in the same zip code with a two hundred lb flywheel spinning twice the intended speed on a hundred year old cast crank.
Only 200 pounds?
Came to say the same thing, there is a fine line between heroism and stupid.
My dad was a machinist mate in the Navy for 21 years. He saw that and
@@rossbabcock2974 and?
@@Sever3dHead Presumably the flywheel exploded and he's dead now? Right in the middle of his sentence too...
I saw this happen to an M577 personnel carrier at NTC on Ft Irwin while they were doing maintenance on it. A platoon buddy of mine heard the racket and ran up and slapped his clipboard over the air intake, shutting it down; which is about the coolest mechanical quick save I've ever seen.
Piece of plywood is the upgraded tool when the clipboard isn't big enough.
I did this using a drip pan to an M1120 LHS.
NTC is nothing more than a desert where we took helicopters to crash them. With diesel runaway I always figured my t-shirt jammed into the intake would work. Also thought a fuel shut off valve would work. I never thought about the turbo leaking oil. That kinda kills the fuel shut off idea. Fuel, Spark (glow plug) and air keep an engine running as we all know. Looks like chopping air is the ticket. I know turbine engines better than diesel's but I get the idea behind them. Irwin more like sweating. Been there three times winter, spring and summer rotations. Winter is brutal cold at night like my hometown Tucson. Guys who never been in the desert didn't believe me. After that rotation they believed me. Summer rotation I told my guys to use the whole salt pack from their MRE's. Didn't believe me and watching ten soldiers going through muscle cramps was worth it. Do you believe me now? Lesson learned in our AAR. Listen to the guy that grew up in the desert. He might know things about living in the desert. Fucking do pushups till I get cramps.
@@DobermansRockhe glow plugs are just for starting in cold weather. A diesel ignites it's fuel by compression. When you compress a gas it gets hotter as it's compressed. In a diesel engine, clean air is compressed until 400°C. Then fuel is injected into that hot compressed air...and ignites on impact. The glow plugs is to heat the fuel if it's cold (because the cold fuel lowers the compression temperature more than usual). Once the engin is warmer, it doesn't need the glow plugs anymore. My father's 78 merc ran perfectly fine with no glow plugs whatsoever (except cold mornings). When a runaway happens due to an oil leak, or injector malfunction, the only option is to smother the engine.
Какой красивый и густой дым от картерного масла .
Destroying that old 2 stroke in that old school grader hurt my soul. That was a cool piece of machinery that deserved to be preserved.
With its wide eye staring at us. :(
Thats a scraper
it was tortured and killed for our entertainment, like the gladiators of old
I agree to a point. It is possible that engine was already past it and was given a final send off. Could have had a replacement to go in. But I dunno the background of that clip so just a thought
Im sure Detroit sells all the replacement parts to repair that engine if need be. Two stroke diesels are still in service. Just not as commonly in semis. Youll see them in boats, generators, and even some fire trucks (airport/street use)
Those guys pulling the battery and spraying the fire extinguisher into the exhaust had me dead.
It was aimed more at the tyre ? :)
By far the funniest one 🤣
They were aiming for the fuel tank for some reason
Extinguisher into the intake would of worked fine
They should have aimed for the intake, could have worked
If you ever face this, step 1 is to block the intake or dilute the oxygen to suffocate the engine. Don't disconnect the battery or whatever, just pop off the airbox and cover that intake. All combustion relies on an oxidizer (or fluorine if you're launching a smokeless surface to air missile).
Easy way is a co2 fire extinguisher in the intake Replace that oxygen
Carry a wood plank in your car or truck for this purpose.
Piece of wood or metal not a phone boom
@@driftingbrandonc.6480 As far as i know, no that won't work.
@@driftingbrandonc.6480 No, read the given text in the video
Just proves how Diesel engines have far more personality Vs Petrol engines
One is like a country girl and the other the city girl. You abuse the city girl and she will take every penny from you (repair and maintenance). Abuse the country girl, that puts up with more because she's sweet and make things try work, takes you down with her, herself.
I agree
@@PrinceAlhorianwhile this may be true, i think we should all agree that we shouldn’t abuse any of our girl😂
You mean desiels throw temper tantrums lol
*temper
Only after working as a Cat driver for 10 years or so did I learn that a diesel engine can runaway. After finding out, made a point to locate the emergency shut off on the 2 machines we were using. I knew if I tripped those and the engine still would not stop, I had a runaway on my hands . Of course I was running Graveyard with no support at the time. One night something happened and I needed to shut down the machine unexpectedly. Pulled the kill switch in the cab. That slowed it down a little, but would not stop. That dreaded chill went down my spine. "RUNAWAY?" Grabbed a ball peen hammer and a flashlight and got into the engine compartment. Found the emergency kill and popped it with the hammer. Thank God; it put it down. Have to think I was starting to suck up crankcase oil and she was fixing to go, but I caught it just in time.
When I was young, my dad told me about it while replacing his turbo (I guess he was nervous about the seals sealing properly, etc and an oil leak). He told me, the only way to stop it, it's to block the intake. And then it started to run away lol, after running a while. He ripped off the intake pipe and blocked it with a plank.
Your English is complicated
People love exceed engine oil level. Also old turbos can cause it. I prefer check this level regularly.
@@nsx001 nuh uh
@@nsx001you spoke too soon
'Gimme a wrench so I can disconnect the battery', that was friggen hilarious 😂
The truck was a total, at the least he could salvage the battery !
Tell me you don’t know shit about diesels without telling me you don’t know shit about diesels
@@mattns13 The way he started explaining it as if he knew something too.
He was trying to make sure the spark plugs were inoperable.
@@Hakken1 which is why everyone is making fun of him. It’s a diesel
I wonder how many people driving diesel vehicles don't know that this can happen or how to stop it if it does...
yeah, also i wonder why manufactories doesn't install some manual intake blocker in case of this
@@CheckEngine69 my nephew had a mk6 Jetta diesel that did in fact have one. So some do.
At the very least have an CO2 extinguisher in the trunk
@@4BillC I think all modern Diesels now have a kill switch for this , once key is removed it closes the air intake valve
@@markchriestenson3257 Sure, then alll you have to do is recognise the runaway, pop the trunk, pop the hood, remove the airfilter, stick the nozzle of the extinguisher in it and let loose. Aer you seeing the problem here? It's probablhy more dangerous to drive with a high-pressure gas cylinder in the trunk than to accept the loss of your engine in the *extremely rare* occasion that a diesel can runaway. properly maintained diesels don't runaway so just don't cheap-out on maintenance and you'll be fine.
7:40 "I need a wrench to disconnect the battery" said Mr. Clueless
he should remove the spark plugs aswell xD
But it is running off the backup auxiliary unit, so if you cut the power it will stop, he says.
While I was going to college, I worked at Power Systems, a Caterpillar dealer in Southern California (this was back around 1990) as a journeyman mechanic. Caterpillar was just starting to introduce electronics to their engines. On the 3406B's, their early model had a PEEK system. It was basically an electronically controlled fuel rack. There was a brushless torque motor that would move the rack. When installing it, one of the mechanics installed the rod of that torque motor on the wrong side of the fuel rack pot. When you'd start the engine, the BTM would move the rack to full fuel, then back to its start position. With that rod on the wrong side of the pot, the BTM pushed the rack to full fuel but never brought it back to start. The tech fired up the engine, and it immediately ran full rpm, well beyond its controlled max RPM. The guy was panicked, running around pulling wires. But, since the BTM was in the wrong position, cutting power to it did nothing. His next move was even better....he jumped in the cab, threw the trans into its top hole, then popped the clutch, thinking it'd stall the engine. It blew the trans right off the engine. Another tech walked over, cracked fuel lines, and it eventually shut down. Wish we had cell phones back then to get a video capture of that.
I kept shouting at that first dude to RUN, but holy crap he fixed it! Tungsten balls!
Dude these old engines wont fall apart by any means :D Worst case scenario is piston destruction.
Can’t beat them. They will still run until The last days.
I was wondering how he can balance with such huge balls too
Probably didn't fix it, it seized!
So many people and nobody knew to block the intake. But they removed the battery.
And not one single person took advantage of the opportunity to do a burnout.
I think they could do it for the first two seconds, then the gearbox would have died and possibly take the driver too
My thoughts exactly! Mite aswell go out in a blaze of glory 😜
Freeeeeeedoooooombooom
Or jump the grand canyon
If the clutch doesnt slip lmao
My grandfather once had a runaway engine in his lorry. He stalled the engine by slowly parking the lorry against a pole, then putting the gear in 1st and popping the clutch. There was a loud bang and everything stopped. Turned out the maintenance guy had put the gearbox oil into the hole where the engine oil goes, so the engine was running on excess lubricating oil. The drive train was ruined, but at least it and the engine could be replaced. This was around 50 years or so ago.
That is a very effective way of destroying the drivetrain. Put it in direct drive and hope that the clitch can handle the extra power. One drriver did what you said and it led to a broken differential, two broken driveshafts on the second driven a le and a destroyed clutch.
best way is to put it into highest gear, e brake on and then stall that shit by getting off the clutch fast.
I knew someone that drove a Mack truck and trailer, he stopped at the lights in south Auckland approximately 25 plus years ago and the engine started revving higher ,it couldn't be taken back to idle, they tried stalling it as well as their companies mechanic tried various things to shut it down, they just had to wait for it to wreck itself, it turned out they go a free replacement engine because of a fault
Why 1st Gear.. to stall an Engine in aTruck or Car select a High Gear and let out the cluch, by selcecting a low gear you are introducing to torue the the transmision..yep something will break or he vehicle will jump forward. Keep other foot firmly on brake pedal !! Easy...
Amazed that spraying the tyres and exhaust didn't stop it! 🤣
I had this happen a long time ago. It didn't just die out it yeeted a piston into outer space. Was over revving just a tad
Yeah, just a tad! BAAAHAHAHAHAHAHAAAA!!!! I hear the Voyager space craft caught a picture of the piston flying by outside of the solar system?
@@Theresistance64 yea after the Voyager probe took that Earth's photograph, the second most magnificent photograph it took of was that very piston that already reached interstellar space moving close to speed of light 😂😂
🤣
What is yeeted
@@nowthatsfunny1 to throw away at great speed😄
I love the guy with the UPS truck I need a wrench so I can unhook the battery!! 🤣🤣 I wonder what he thought when it stayed running. You can even unhook the fuel line and sometimes they will stay running on the oil in the crankcase. The most effective way is to block the intake off or empty a C02 fire extinguisher into the intake. Starve the engine of oxygen. No air no fire.
He did! He did! He did!
Maybe he thought it was a hybrid engine-clutch-gearbox-rear axle drive type of vehicle.....or he could just be a j**k
@NÄFYUS 2049 Or wait until it burned all the engine oil 🤣🤣🤣
Yeah dude I’m a diesel mechanic this shit is funny they have no clue lol
Ah yes, the old electrical backup auxiliary unit trick.
This happened to me on the motorway in a Land Rover. The head gasket failed and allowed an oil gallery to feed the sump oil into the engine. The engine stopped when the sump was dry… about 8 litres. There was so much smoke, I stopped 6 lanes of traffic. There’s a real risk that the engine seizes and the connecting rods are fired through the block. Get out and stand clear. A new head gasket was fitted, the turbo replaced and the engine ran fine again. Good old Land Rover. 😊
Always Land Rovers
these damn rovers man, great on the outside but not under the bonnet
"A new head gasket was fitted, the turbo replaced and the engine ran fine again." Are you for real? It overrevved until the sump was dry and you're telling me that the pistons, piston-rings and bore was fine? No way! I'm even worried for the crank and rod journals at that point. There's just no way unless it stopped before all the oil was gone.
Why didn’t you put it in gear and press the breaks to stop it?
@@quirinm. Lets be charitable and assume it was an automatic. The clutch could also be an issue.
6:34 *ONLY ENGAGE HIGH GEAR ON SMALLER ENGINES.* Early in my diesel career I remember hearing of a guy in a runaway big rig who thought it would be a smart solution, and promptly sent the flywheel through the cab
Try it on a good old truck, he will show you what he's thinking about that
I loved the guy using the fire extinguisher on the back of the truck...instead of on the intake of the engine
Ramming it up the tail pipe... 🙄
And dry chem to boot.
more to the point, he used the wrong kind of fire extinghuiser, that one is unlikly to realy stop the runaway, and will actualy damage the internals eaven more
@@crazy031089 That thing was shot already, and would need a rebuild after a massive over-rev like that either way. They just wanted it stopped.
The exhaust was red hot and caught fire. He was putting out the fire. Not a difficult thing to figure out.
My '78 diesel Rabbit experienced several runaways while on the interstate. Fortunately it was in gear and had good brakes to slow the engine down back to normal. Turns out the oil separator in the crankcase vent system was letting oil fumes get into the intake manifold. A new separator solved the runaway problem.
Too funny! I had the exact same car a 78 diesel rabbit! It would runaway going down a hill and all you had to was apply breaks or find a hill to go up. NEVER pull over and stop or it would run until the engine oil was depleted. It scared the crap out of me the first time but after awhile it was entertaining.
Think after the first couple of times, i'd have just let that vent off into the atmosphere.
Just sold my 1981 diesel Rabbit pickup, I miss it. Even though it was barely driveable
@@joekoncovy ..and you named it 'joek-wagon'??
@@joekoncovy did you break your brakes doing that
I feel soooo bad for those that think all they have to do is unhook the battery.
Well honestly, when I was researching some stuff on a particular type of bus that I was basing a sim-rig on, I came across a button on the dashboard that the manual of those buses mentions as: "Cease ignition. Switches of the electrical circuits to stop fuel pumps and cylinder ignition." I am not well versed in engine technology at all, but I was looking at that like "Wait what, it's a diesel? How can a diesel have active ignition?" While this might have been a mistake or an attempt at discussing the function of this button to less technically skilled drivers, and it was a bus designed at the end of the 80's, I can see how that might confuse people. (Also, I know that in some countries the battery can be expensive, and next to that, preventing that thing from leaking due to the heat of the engine should it catch fire while on it's way to self-destruction, might also be the idea there. Having another chemical fire on your hands due to a ruptured battery next to a fuel fire from a car should something go wrong there might also be something they tried to avoid).
Id remove a spark plug
They re dumb af lmao 😂😂😂😂
no, removing the glow plug
@@SawyerDickeyWouldn't do anything. Glow plugs are for starting up.
This'll get lost in the thousands of comments, but in a late season of Scrapheap Challenge, the diesel engine of one team had the governor break and it went into runaway. Fortunately the captain of that team knew exactly what happened and before it got too far, he quickly put his hand (!) over the intake pipe and choked it to a stop.
You can lose or severely damage your hand doing that, the intake pressure is incredibly high on a runaway engine.
@@benedictearlson9044 maximum it could possibly be is 14.7psi. Engines don't "suck air in", the atmosphere pushes air into the space where the piston used to be, and it can only push at atmospheric pressure.
@@tissuepaper9962 We are talking about a runaway engine - which may be behaving in an unpredictable manner. I've heard the pressure at the air intake can be excessive in these situations especially with a truck engine, but by all means prove that wrong by sticking your hand over the inlet to try to stop a runaway engine and let us know how it goes.
@@benedictearlson9044 it has nothing to do with the engine or what it's doing. the atmosphere literally cannot push any harder than 15psi, that's why vacuum chambers are so much safer than other types of pressure vessels. You can't physically generate any more of a pressure difference than that with a vacuum pump. This shit is taught in middle school, I *guarantee* that you learned this when you were taught what barometric pressure is.
@@tissuepaper9962cutting the oxygen off with your hand will shred your hand that guy is right don’t know if you’ve seen someone stick a shirt or something in there to stop it but it’s very dangerous
It was very difficult watching all the idiots spray everywhere except the intake. Concentrating their power near the exhaust.
It was a powder entinguisher an no co2 one. So it would do more harm in the intake than it would help. Also there was probably a fire under the car because of the hot exhaust that burned through like everything?
That doesn't make them idiots. They just don't know.
For a we know this might not happen often
@@-fuk57 Well, that's because they don't choose to learn how it works. I chose to learn how all my stuff works before i bought it. My car, my desktop computer(I do knowhow to program), Dj mixing platform and i even know general construction to repair my home. What do we call people that choose not to learn? There's a word in the English vocabulary for that...
@@DJBillionator Your heart is in the right place but your head is....
The most famous runaway was the deepwater Horizon. It's diesel generators went crazy when the natural gas came up the drill pipe.
I know what I'm looking up now!!!! Thanks!
The guy with the UPS van was so confidently wrong. Hilarious stuff.
Happened to me with a 1986 Jetta diesel. Bought it from a guy who recommended to add 4L of ATF to crankcase(in addition to the existing quantity of used engine oil), let it idle for thirty minutes, then drain everything and change oil. When I turned off the ignition and removed the key after the 30 minutes, all hell broke loose. It ran-away for 10 minutes until coolant overflowed and engine finally burned off excess oil to shut down. Scary AF. My buddy and I were hiding behind a shed while the old 1.6 spewed out enough smoke to be visible from space. Surprisingly, it just blew the glow plugs and after changing them, proceeded to run like a top for another 100 000km. God I miss that car!
And the guy who sold it and told you to put that AFT in the crankcase is probably laughing as hard as I am (^_^)
That dude at 8:00 is your classic "I know everything about everything guy.
I know right... "Electrical auxiliary backup power" haha what a tosser...
This is why all diesel engines should be equipped with an air shutter on the intake, like a lot of the detroits from the 60s and 70s had just for that specific reason
all they had to do is shut the fuel off
@@lucifermorningstar1274 I don’t think you understand how diesel runaway happens
You're certainly right about the air shut-off. Many (many!!) years ago my 1st truck was a '72 KW with a 318 Detroit V8. I ran coast to coast for a couple of years when I first started out. I had a blown head gasket replaced in Bismarck, North Dakota. When I got back to Milwaukee a few days later, I stopped in a truck wash to clean the truck before going back to my shop. I pulled up a slight slope to get into the wash bay and shut down the truck. Pulling up that slope and immediately shutting off the engine left a rich charge in the intake. When the truck was ready, I started the engine and it ran away almost immediately. The normal RPM limit was between 2100 & 2300 RPM, depending upon who you talked to. That Detroit ran straight up to 3400 RPM while I was yanking on the air shut-off handle... it came off in my hand!!! The engine quickly stopped on its own when a cam follower failed and locked up the engine. After a quick inspection under the cab we found that the steel wire that ran to the butterfly on the 671 Blower intake was never reconnected by the shop mechanic. After spending a week waiting in Bismarck for the head gasket work, I was shut down for another two weeks getting the new problem fixed. When I started driving that KW, I had no experience with that engine. The engine may have reached 3400 RPM but I'm fairly certain my heart was running a whole lot harder than that for a few seconds before the engine seized!!!!
It's interesting that some modern designs of petrol (gasoline) engine, without traditional throttle butterfly, have an emergency intake flap as backup
@@lucifermorningstar1274 Do some reading. Please.
"A thousand horsepower of the Diesel Empire will runaway upon you. Our smoke will blot out the sun!" "Then we will film in the shade."
Ппц, я думал единственные которые под капот полезли догадались воздухан перекрыть. Нет, блин, они аккум достают и порошковым огнетушителем остужают 😆
Аккум достали чтоб перезаряда не было.😂
Вони тупі як дошка, я би їм права не дав.
Согласен. Ездить научились, а принцип работы дизеля не знают. Раньше в кабине у опытных трактористов и камазистов всегда шапка ушанка старая валялась. Когда дизель уходил в разнос, толкали эту шапку в воздухан и глушили двигатель.
Додумались огнетушителем под днище поливать! Надо было в глушитель дунуть)
I didn't know much about diesels when I first bought my '01 Duramax. Ran it low on fuel and it shut off while idling on an incline. I added fuel but didn't know about correctly priming it. I got frustrated and ended up getting a can of starting fluid. I added some, added some more, etc... Suddenly she finally cranked and RPMS went crazy. Thought the thing was gonna blow up. It eventually shut down. Lesson learned! I'm actually still driving that same engine today with just over 1.3 million miles on it!
let me know how that goes
1.3M miles without a rebuild?
Glad it worked out for you, but yeah, ether and diesels are a potentially bad combo. A one second squirt is about the max. I had an old Farmall 504 in Buffalo New York and unless the block heater was plugged in overnight it would not even think about starting. I also learned about overdoing ether trying to start that tank!!! I learned real fast you only squirt when the engine was cranking and only for about a quarter second. If it didn't catch, WAIT! That engine had glow plugs. Newer ones have an intake heater grid, definitely do not use ether on them! Lessons learned!
@@Jimster481 big engines can still run even when they are fucked up badly
@@Jimster481 yes. Head gaskets and studs at 510k. Transmission rebuilt at 1.2 million. Been thru a few sets of injectors. Stock power levels.
the ups part got me good. "pull power and it will kill it"
that's why guy is delivery man. If he knew something he wouldn't be doing that job.
Wouldn't the fuel pump stop working if they took out the battery?
@@graygrey4191 it will. but when diesel engine runs away it start combusting it's own oil in crankcase, so no fuel or electricity is needed. Only person can do is block intake until engine stops to starve it from air, because engine will run and burn it's own oil until all is gone and it seizes up
@@graygrey4191 no, the fuel isnt whats keeping it running once it runs away, the oil in itself is enough to fuel it under compression.
@@graygrey4191 no, the fuel isnt whats fueling the diesel at this point, something broke (piston) probably, and its fueling itself with its oil
I’ve had a Perkins 6354 runaway once and had nothing but the shirt I was wearing to jam in the intake . That killed it . Also have a zetor tractor that I was snow ploughing with once and stalled it , the tractor must have bounced back slightly before I could Clutch it and the engine started working in reverse . Smoke coming out the air intake and air going in the exhaust !
Iv'e seen the reverse run close up.. Little Petter engine with a detachable starter handle. Turning it over on the handle and it kicked back then ran backwards. The handle stayed in place, kept there against the 'one way' pawl. No one dared go near it for fear of the handle letting go. The end came with a classic NNNNNEEEEEEEOOOoooooowwww!! Silence and smoke.
I worked on an old diesel ship, Cooper Bessemer engine, and it had Two sets of cams on the camshaft but no reverse in the gears. To reverse you would stop the engine , shift the cams and restart. I shift incorrectly one time and the exhaust came our the air filter! All large ships that have slow speed engines still do this but with automation not an operator like I was. Oh some large ships have controllable pitch props so the can always just turn in one direction, they reverse by changing pitch
@@josephpadula2283 I don't know if you have ever seen the cam drive on a Harley Sportster but each cam is on its own gear, and they are all spun off a gear on the crank. I put different cams in my first Sportster and being a noob managed to get the crank 180 degrees out from everything else. Tried to start it but knew something was wrong when gas came spraying out of the carb throat. Whoops! No harm done but had to take it apart again to get the timing right.
I was a prime power production specialist in the Army and was hired by Detroit Diesel as a field service technician for land based generators, marine applications and marine propulsion. Worked in a test cell for a couple years as well…I wanted to know everything possible that I might face. From generators on the North Slope, fishing vessels in Dutch Harbor, water taxis, catamaran ferries, MotorYachts, Super Yachts, business backup power generation, private citizens backup power…you name it I have seen it. All except a runaway Diesel engine. Never happened in the military or as a civilian. But, I never had a desire to miscalibrate an injector pump and I also loved making six figures by traveling around the world…troubleshooting engines and paralleling equipment, etc. This to me is a rarity and would loved to have seen it.
I got to watch engines run away wild like a bull, and also learn a great deal about diesel engines. Thanks for the information you provided along with these clips!
Ikr
Got to love the geniuses that thought disconnecting the battery would help... And that dude that sprayed down the exhaust is just a whole new kind of special.
Yeah that I just laughed at. I didn't even know what I was watching. Like "Oh, there is smoke. There must be fire here!" hahaha
This is a rather educative video. I know this existed, but now I know a lot more about the matter. Which is helpful, since I have driven loads of commercial Diesels over the years, but have my first personal Diesel car for a few months now.
The info in the corner was really well done, much better than just a normal compilation!
The fire extinguisher was Hilarious. They were putting out a invisible fire LMAOL!!! Instead of wasting it on the invisible fire they should've sprayed it down the intake. Thats an A for effort I guess.
Given engine runaways being so rare, it's our instinct to treat smoke with a fire extinguisher as there could be fire.
@@angkhoavo8004 Common Sense Prevailes Dang Nabbit
using a powder extinguisher is about as useful as throwing sand in the intake.. 🤷
That wouldn't work unfortunatelly. You need a big time CO2 extinguisher to even do anything. Those powder pieces of shit are good for extinguishing a trash bin after a burning cigarette was thrown into it. But be aware, because even this can be too much to them, especially for the very small ones.
. I wonder if you run a hose from the exhaust (with all that smoke) to the intake would stall it .... Not that there would likely be a hose on hand.
The simplicity, efficiency and versatility of diesel engines are fascinating
the probability of these runaways are very very very little unless you barely take care of the motor or you just struck a big bad luck, this is highly unlikely to happen
@Sphered was fairly common on old Detroit with solid injector racks. If they sat for a while an injector would sometimes stick and hold all of them to wot
Clean diesel power.
@@Spheredalai also can be common on a perfectly maintained engines, for example an unaware operator hitting a gas line with an excavator and the gas causing a run away because it’s being pulled through the intake manifold even after the fuel is cut from the machine. It can happen to any one of them and well not super common it does happen besides that fact
Besser als jedes e Auto.
I like how they go out in a blaze of glory.
If everybody knew how to stop a runaway diesel engine, we wouldn`t have these wonderful videos to watch.
Runaways are scary especially at sea. Once saved the crew of a beautiful sport fishing boat on their way in because they had a runaway engine. Eventually, (the likely cause anyways) was the turbo insulation getting sucked into the turbo causing an engine room fire, and then it quickly consumed the whole boat in a matter of two minutes. Nobody was hurt except for the captains insurance
This why in the Canadian oilfield we install a "PASO" or positive air shut off, sometimes called a rig saver in all diesel engines. The only way to stop them is cut the air off.
They have this on diesel powered pull tractors as well. If the tractor gets squirrelly the man on the sled can pull a lever and it will close the intake on the tractor.
Yes, greetings 😀.
are those different than 'american' oil fields??
@@tommurphy4307 yes, better and we know how to not be cunts to people unless it's called for ;)
@@tommurphy4307 I'm not sure. Likely is not any different. But I don't make absolute statements about something I'm unsure of. I've never worked the patch out side of Canada so I cannot state that. I don't know what your question or comment goal was, but I'm replying that I don't state things I don't have first hand knowledge of. You very well could be 100% correct. Or are you picking a message board fight of some kind?
@11:40 i was excited to see the Fire Extinguisher method put into action. I was immediately disappointed when they just decided to spray the whole car instead.
Had this happen to me yesterday on a UTB 65 horse farm tractor. Tried blocking the intake but that seemed to speed it up further- not sure if something let go further up the intake tube, haven't had time to look at it yet. Jumped back on it and shifted to third gear in high range to stall it in a snowbank- that worked, but haven't got back to it yet so no idea yet what caused it or where I am with damage. I did notice after it was shut down that it was leaking diesel somewhere above the fuel pump- there's a precombustion function on these old tractors (for cold starts- I never used this and not sure it even worked)- I'm thinking I'm gonna start looking there when I have a chance to get after it.
Normally this happens when you have a turbo bearing failure or super charger fail and the engine will run off on its own oil until the oil is gone and the engine seizes up . If you can cover the air intake somehow, it will shut down.
Or put in last gear while pressing brakes....
@@groovechampion1462 do that in a big engine and say goodbye to your existence
Wait - the other end of the spectrum is block the exhaust though right ? I dont know much about diesel motors besides glowplugs vs sparkplugs like literally that's all I know, also I heard running out of gas is catastrophic but I would think runni g out of air or spark would be just as bad
@@DuctTapedGoat You wouldn't be able to hold anything over the exhaust tight enough to snuff it out. There will be a SHIT TON of pressure coming out the exhaust pipe. WAY more than a human could hold.
@@davelowets hot as hell too, you'll fry your hands to the bone
I like how they think disconnecting the battery will kill the engine. 😂
Maybe if we can stop the plugs from glowing that will make the situation better
Maybe if we wobble the disconnected battery? Take the battery out? Maybe if we carry it further from the car? No? Okay run around shouting at eachother then!
Yah. No spark plugs in diesel engine. Lol
nope, better solution would be to empty CO2 fire extinguisher in intake to prevent air going to engine
@@JensSchraeder even if there were plugs an engine can run with no battery off just the alternator
Someone told me that this is actually good for the environment! Thank you runaway diesel engine
The amount of smoke that just one of these engines creates is crazy.
WOW the guy at the start (blue boiler suit) handled the situation well. Good video, thanks for posting 🙂
No, none of them did. Should have immediately had a fire extinguisher shooting into the intake, and that enging should have been strapped down MUCH better... thats was a terrible job, that fortunately resolved without any injuries...
@@i-love-comountains3850 they did it on purpose for the video clearly
@@HircineDaWolf NO, they did NOT
He knew what he had to do and did it with purpose
1:57 such a shame to ruin that engine. Anyone that knows Detroit Diesels knows that the 6-110 is very hard to find....especially if you need a block
I now know why...
Yeah this shit is retarted. Someone could use that motor or those parts.
They did stop it by plugging the intake with a rag,didn't they?
Well why didn’t you buy it since it such a shame 🤷🏽♂️
Sounds like either a 4-53 or 71
I watched this video very stoned from beginning to end and it was so weird because of how fried i was and ever since then ive been fascinated with this and i like to come back to the video every now and then and rewatch it
Some of these I feel like you could stall by putting them into gear. Get them into gear and then apply maximum brakes. Taller gears will provide increased advantage for the brakes to overpower the engine. I think the strain on the clutch would be similar in all gears.
So very few people seem to be capable of figuring this one out. The clutch stands a fighting chance if you get it into gear and rolling THEN get on the brakes (it's just holding with static friction instead of trying to handle a high-torque, high-slip condition). And for those people who are worried about the gearbox exploding, put it in direct drive (usually 4th gear?) so there aren't even any gears involved.
good way to grenade the transmission, drive line, rear end and now you have lots of things to replace
In the higher gears I would think that the tranny would stand a chance.. Doubt the clutch would handle it, though.
@@Rubensgardens.Skogsmuseum Something's got to give if you can't cut the air intake. Clutch probably cheaper than a whole trans or block.
Sure cracked me up when they were trying to extinguish the exhaust🤣
That, sir, was one of the best videos of this type I have seen in quite some time. Not just images but information and invaluable advice for those not familiar with a runaway. Well produced and presented, you earned a subscription for that. Every diesel I own has either an induction air shutoff or if a turbo, a CO2 extinguisher on board or nearby as well as a manual fuel shutoff (which of course won't work if a turbo seal blows and it's running on engine oil), it's just common sense as a 2kg co2 extinguisher is under 100 bucks US, an engine rebuild is either10s of 1000s of dollars or priceless if an antique.
If you fire an extinguisher into an engine intake it better be CO2 otherwise it's ruined anyway
Pretty sure I used the term "co2" at least twice . . . In fact, a lot of engine strangers are nitrogen or one of the CFCs, not co2. @@SavedbyHim
Imagine their confusion when not only disconnecting the battery didn't work, but pulling the battery out and taking it for a walk also didn't work. Maybe it is a new high tech battery that is connected with wireless amps. Also, new diesels have throttle bodies. It helps with emissions. Mine sits after the intercooler just before the egr.
The captions are underrated, great video
Detroit Diesel 2-strokes could literally run backwards too
Mechanically injected 4 stroke diesels can too. Saw it happen on an old cat engine when the driver accidentally stalled it starting from a dead stop up an incline. The truck rolled backwards before he could push in the clutch or brake and it restarted the engine running backwards. He laughed and said "hey I got 18 speeds for reverse now!" He shut it off and started it back up, apparently no harm done.
Isuzu diesels can do that. A driver came into the shop worried about smoke billowing out the air intake.
Detroit diesels will run backwards I have witnessed this in person
@@batmanlives6456 even my 6.2?
@@oldrustycars 90% of diesels are Isuzu diesels
If your in a semi that runs away if you like living don't dump the clutch in a high gear. I've seen a man's legs completely destroyed as the transmission exploded and ripped through the cab. He is lucky to be alive.
Yeah... If you have space to drive, just accelerate in a low gear, shift up and break while having it in gear (no clutch pressed) so it will just slow it down to a stop. Breaks are stronger than the engine
Especially when you're in high gear
@@qwertz4035 good point
Tks for letting people know, many hurt and die because seems everyone tells you to pop the clutch !
Don't risk putting your breaks under high torque, leave it in neutral and smother it with a fireblanket.... thats why most trucks have it AND a extinguisher
Awesome phenomenon. Thanks for sharing. 👍
We had an old Mack truck with an emergency cutoff that dropped a flap in the air intake. I always wondered what it was for, now after 30 years I learn this.
Having experienced runaway on a 7.3L International engine it can be scary for sure and I had no idea what was happening when it happened. It was pulling excess oil up from the crankcase into the combustion chamber, screaming at about 8k RPM. Died on it's own thankfully when it ran out of oil to burn and I was very lucky no Dave was done. After that happened I learned all about runaway and now it's funny watching everyone scramble around panicked when a short stuffed into the air intake would stop it almost immediately.
Be very careful stuffing anything into the air intake, the pressure will be incredibly high so if your hand gets sucked in you could lose it.
Thanks for this informative video. I have driven diesel cars for nearly 20 years and this is the first I have ever heard of this phenomenon. Your text subtitles were very informative. I now know how to handle such a situation.
You have a electric fuel pump ,mark the relay so you can pull it. Hope you never have to pull it.
Same here, I own a diesel andwas a bus driver for a while and had no idea.
@@maintenanceman1015 what for? IT is not fuel making this with engine, it is OIL. Same effect as removing battery = no effect...
@@maintenanceman1015 Disabling the fuel pump might not shut it down if it is running off engine oil from a leak somewhere in the turbocharger or an oil air separator.
"I need a wrench for the battery". So, so funny. Silly man!! Atleast he was trying to help. Lol...
Had this happen twice in my career as a mechanic, saved both engines. One I was able to block off the intake choking out the engine, the second I used a fire extinguisher at the intake. Captions in the video mention both of those methods- they work, just takes some quick thinking and brass balls to get close enough to do it. Another non runaway instance a connecting rod blew out the side of a block on an engine I was working on outside of the equipment, the trajectory of it was where I was kneeling next to it while it was running moments before, it came out with some force, had I been sitting there it probably wouldn't have ended well.
When a diesel runs away, can you turn it back on right away? Or I'm guessing you need to fix the root problem first
In commercial trucking the diesel runaway is usually caused by fumes being sucked into the air intake which bypasses the governor. Remember in Canada a guy delivering fuel to a gas station and idling near the tank vents in winter and the truck started to runaway until it self destructed at probably 4000 rpm or higher which caused the bearings on the crank to spin. When i worked in the Canadian Arctic on the DEWLINE which was a cold war radar and communications continuous line we had Jimmy Diesels or Detroit Diesel 671 for power production they had an overspeed shutdown where dampers would slam down and block intake air to kill the engine before destruction. People do not understand that diesel is compression ignition as opposed to spark ignition. More modern diesel engines have electronic injectors and computers but old mechanical diesel engines once started did not need a battery unless running accessories as well as some trucks used air starters.
Yeah, but modern ones can still runaway by using oil from a turbo leak as fuel, and then still not need the battery, as per the VW at the end of the video...
@@vincenzodigrande2070 thankfully anti shutter valves are standard in modern diesels, it acts just like a throttle in a gas engine, cutting off air to the engine if needed.
Thank you for explaining the risk of this happening to older diesel technologies vs the newer tech
Air starters? 7 year tech, learn something new every day.
Ah the old Distant Early Warning system. Glad we haven't actually used that to detect incoming bombs yet. Thanks for your service!
LOL I can't help but LMAO when someone starts a runaway, and they hear the thing scream to life, and they run like it's dynamite with a short fuse.... And then they trot back moments later while the things blaring scratching their heads wondering how they're going to go about shutting it off.
Very informative and interesting, thanks!
The guy at the end that took the TAXi sign down OVER AND OUT...😂😂😂
Illegal taxi I'd say huh?
Love the crayon eater asking for a wrench to disconnect the battery, good luck drawing award winner
At least he was trying
Seen it happen, had it happen to me and blocking the air is about the only option...Its interesting because most trucks/heavy vehicles have a blocker in the intake so you can stop it quick but most amount of people i have meet that drive them and don't know cause they just turn the key off. Whats really impressive is some of the old detroit etc can have rods hanging out and still be banging along
Or put it in a high gear and break if it is a manual.
I drove heavy diesels for a good 15 years and never knew about this. Even knowing it I don't know if I would have the courage to open the hood and try to starve the intake when it's running away.
7:02 "why is my package so late?? it was supposed to be here 30 minutes ago!"
Loved the last clip of those guys discharging fire extinguishers all over that car after pulling the battery. But it's still running! Would think that in countries with large diesel fleets SOMEONE would know how to deal with a runaway.
The guy trying to put the extinguisher jet into the exhaust was the craziest part of that incident
@@RWBHere The dry chemical on the tires was my favourite. I can just imagine his surprise when it didn't work.
car knowledge has become less and less common over the decades. Most probably dont even know that a diesel can have a run away scenario or what this scenario even is and how its caused
С огнетушителем просто эпичный чел.
2:33 *Send this to Gretta*
Gretta thunderberg
Thx for the info
Imagine having to stop an unloaded runaway diesel engine with its flywheel right by your shins 🥴😵💫
the vast majority of them have cast-iron bell housings- your shins are protected
That is why, in my opinion every person driving a car with turbo-diesel engine and manual transmission should know the drill - if you see the symptoms of a runaway, stop, apply full breaks, put it in the highest gear possible and release the clutch.
Good man
Nah it's an excuse to completely demolish a hell cat in a roll race
If not in the car. Just rip the airbox out and trow a big rag
@@JohneyLockhart I worked for a company that had an old 70s Cat excavator that ran away. A guy tried to ball up a shirt and choke the engine but he let go and it litteraly sucked the shirt in and blew pieces of it out of the exhaust! lol . Two shirts later and he got it.
that can be dangerous because the transmission might blow up
Damn! That shit's nuts! I have never heard of a runaway engine. Learn something new everyday. 🤷
Dad was oil company fleet mechanic. Because of dad, I spent 30yrs running my diesel boats. I never saw the event, but I certainly have seen what is left after the engine blows up. Those engines taking off is some mighty scary stuff. Since all my diesels were in boats, I would probably freak out and drown the engine with a wash down hose before it blows up and might sink the boat.
I had a Mercedes Benz W204 cdi do this. I took off my vest/ t-shirt and put it into the intake manifold. Saved the engine and myself from the customer's wrath and disappointment
thats called 'thinking on the fly'- good job.
If you have one, shoot a fire extinguisher in to the intake. If you own an older turbo diesel I would recommend one. All large trucks are required to have one too. Most of the damage from a runaway happens when the valves float and hit the piston, diesel valve springs just aren't rated for high rpm Also if you have a manual transmission the engine is rarely able to overpower the brakes so jam a large gear and stall the engine.
love that you included a definition at the start of your vid, quality
The last one cracked me up 😂🤣 Half of them thought it was on fire and I think the camera guy stole his battery 😳
diesels have to loose line of sight with their battery to quit running. :)
The first machine in the video looks and sounds exactly like my grandmother's washing machine which is in the back garden. My grandad once used it as a whacker plate when he was making an asphalt path. Old faithful can also be used as a barbecue as long as it doesn't break its anchoring chains as once happened on a Saturday morning in the 1950's when it run away and tore up the local cricket field.
I was in oil field trucking for almost 20 years and I fully agree that positive air shutdowns are necessary. Problem is that every one I’ve seen needs almost daily maintenance to function properly.
I wonder if an alternative would be providing a part that is easily accessible that is shaped to cover the intake? Grab it and put it on.
@@AToolWithTools typically a semi air cleaner is about 18” in diameter and around 2’ long. That’s if they only have one. Some Peterbuilt and Kenworth models have two. The positive air shutoff valve is currently the most effective solution until someone thinks of something better.
Very educational presentation of what can go wrong with diesels and how to properly deal with them (not shown in most of the video footage) covered in the commentary. You would think this would be covered in the owner's manual and be part of a truckers basic operating knowledge retention test, and if not, it should be.
It's extremely rare
I shit my pants.
Owners manual? Surely you jest, sir! No one reads the manual!
@@Matthew_Eitzmanyour a cool dude
its very unlikely tho the smartest solution is to have an air intake shut off switch somewhere so if it ever happens the engine just gets chocked. With modern electronics, as the video said, its easily possibly to connect the activation of the shut off to an RPM limit or engine temp limit
What sucks the most is that once the engine is dead it's expensive to replace (if you plan on replacing it that is) with some engines costing 10k or more depending on what type, size, purpose etc.
That guy with the UPS van knew bugger all! Aswell as the guy with that fire extinguisher lmao
In American Diesel School, Denver , Co. the teachers loved to get us noobies nervous about the possibility of a runaway. We would stand by with a greased board to place over the intake or pull the emergency cutoff on the 2 cycle Detroits. The "chicken stick". Cutting off the air is the way to do it if possible.
Up here in Canada. Any diesel engine used in the oilfield must have a positive air shut off. In case natural gas gets into the engine. They automatically cut off the air in an overspeed situation
😄 I had a runaway once. The oil extractor hadn´t done it´s job, I put 7 liters of oil in, hence there was 14 liters of oil in instead of 7. On the highway the car behaved strangely on throttle input. I pulled over at a gas station and all hell broke lose. Luckely it was a manual. Put her in 3rd gear and stalled the engine right away. Drained the oil, put fresh in, she´s running perfectly for over 15 years since. AND my muffler never rusted 😂 Funny to see people doing all kinds of useless things, especially in the last clip. They don´t have a clue what´s happening 😄
I’d like to take a moment to point out the heroes at the end spraying the tire with the fire extinguisher. Real men here folks. We’ll just ignore the fact that if they had just sprayed one of those fire extinguishers into the intake, the whole thing could’ve been over with.
8:00 "Electrical Backup Fuel Unit" Thanks Doc Brown.
I was waiting....after the pregnant pause, when the guy asked him what was wrong , for him to start talking about the flux capacitor..🤨🤔🤣😀😎
Greta would be so proud of this!!!!!!
Learned a new thing today
Thankyou for the thoughtful comments this is great First time ive seen a runaway fixed properly, at 4:00