#RUNAWAY #Diesel #Engines
In this video, we're going to explore one of the most dangerous and terrifying situations that can happen with a diesel engine: runaway. If you've ever experienced a runaway diesel engine, then you know just how frightening it can be.
We'll be taking a deep dive into what causes diesel engine runaway and how you can prevent it from happening. We'll also be sharing some stories from people who have experienced a runaway diesel engine, and their harrowing tales of how they managed to stop it.
We'll be discussing the different types of runaway, from air runaway to fuel runaway, and how each one can be identified and stopped. We'll also be sharing some tips for how to handle a runaway diesel engine if it does happen to you, and how to minimize the damage.
Whether you're a seasoned diesel engine owner or just getting started, this video is a must-watch for anyone who wants to stay safe and avoid the nightmare of a runaway diesel engine. So buckle up, and get ready to learn everything you need to know about this scary situation!
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Disclaimer:
This work is protected under US Copyright Law [Fair Use Clause].
Clips featured in the following compilation are intended for educational and journalistic purposes.
I love how the guy with the red golf just slams the hood like "okay little shit go for what you need to do imma head out"
He just accepted it. At that point the engine is doomed anyways, with it knocking and over-revving
@@danishghostrider he couldve just dumped the clutch in high gear
I wonder if a "Halon type " of extinguisher shot into the air intake would stop the combustion process, with no damage to the engine. I think so.
You can do something about it
@@danielcalhoun8850 what?
WOW ! That glowing engine at the beginning is something I’ve never seen before.
Clearly you've never told a girl those clothes make her look fat...
@@stonefox9124I don’t remember what happened when I did that…must have slipped and fell because I woke up with a black eye
That's just monstrous.
4:06 bro got george floyd on his car lmao
Ironic
What gets me is how many diesel engine operators do not know how to shut it off if it runs away.
Block the air intake !
Some two stroke diesels are actually shutoff by that method exclusively (owned a farm tractor that you pulled a handle to kill it). Many buses that had two stroke had a backup kill switch. There is a less frequent phenomenon that a diesel can do and that is run backward...had it happen to me once and I shut it down and it restarted fine.
@@timheersma4708 old Detroit's 6-71 series
@@elijahcollier4547 Yep. Cut my teeth on those...8V71s as well. The farm tractor was a three cylinder Ford 4000.
Co2 extinguisher right into the air intake
For those of you that don't understand about Diesel's running away, you can turn the key off all day long but engine will not shut off. Once it has an outside fuel source it will run continuously. The only way to shut off a runaway diesel is to jam something in the air inlet so it chokes it out.
Fire extinguisher at intake.
@@raymondholguin7272 that would work too, but I wouldn't use the powder ones I try to find a CO2 one.
some modern diesels have a valve that looks like a throttle body that closes when ignition is off. normally used to prevent a hard shake when you turn off the engine, but also cuts air preventing runaway if necessary. one example is the IZUZU design Z17DTH
@@mikecurzio7312 I heard a phone book at air filter also. I'm sure what ever you can find is the answer lol.
can also put it in high gear, hold the brakes and ease off the clutch to forcibly stop the engine... if you have a manual transmission
I'm actually impressed by the engine on that rotavator (or whatever it was) at 7:00. I can't imagine its normal operating rpm is a tenth of what it reached there.
Yeah that was the best one, it sounded like a two-stroke dirt bike there for a second 🤣🤣🤣🤣
It revved some 11k RPM, for sure.
"Thomas had never seen such RPM`s before"
Me too. I was very surprised it didn't sling its rods through the block. It had to be a well made engine.
Definitely a well made beast of an engine to withstand that.
Can you imagine the absolute carnage the truck at 1:54 would have caused if not attached to the sled?
Bro was trynga make babies with the dyno.
Like a beast on a leash!
Had no idea this was a thing. Very educational! The very first clip is easily the scariest example. It practically ripped that poor truck apart.
Whilst it is scary, in every day vehicles it's not as violent. Yes the engine will destroy itself if nothing is done. But if you're in the car it will not shake you around as violently. This was a tractor pulling vehicle obviously, so it has a wee bit more power than your average f150
Theres another camera angle of the first one that shows a lot more. The truck was literally ripped apart lol
Oh my bad I should've watched a little further before commenting
@@BiIboSwagginsdon't forget that's because that was a sled pull and it was still in gear. In a normal manual that runs away, you can usually stall it in gear, those sled pullers have power sent straight from Hell lmao
7:12 Did't knew that this could rev THAT high
most likely just sounds like it is revving high due to its engine design. Its a diesel lawnmower i doubt it makes 8000 rpm.
It was a 2 stroke engine. So naturally they are going to sound really fast.
Sure, lots of engines can go very high. It's just that they can only do it once.
@@sugoruyo well its more so surprising how it held up at that high of an rpm. Most engines nowadays (in cars) will lock up if going above the redline pretty fast if its riding there somehow.
8:29 Love that turbo flutter!!!!
7:36 WOW, SOUNDS LIKE 12,000RPM!!!! THAT IS CRAZY HIGH FOR A DIESEL ENGINE!!! Even higher RPM than a tuned Predator 212cc for SURE!!!!
That was a two stroke on that thing. Naturally 2 strokes will sound really fast. It was probably running about 6k.
puts rotaries to shame!
By the way, that was a german dude saying "oh shit" at the end...
Typically its the turbo oil seals that let engine oil into the pots via the inlet maifolds.It burns the same as diesel under compression and heat within the head.At this point even if you turn the engine "off" ie cutting diesel fuel it is at this point now just running off the oil leaking past the turbo compressor seals.You can only stop this by choking the air intake.Under high heat engine oil will actually detonate easier than diesel fuel and start to then draw in more air through the intake and runaway until the engine lets go.Thats why you get the thick black smoke as oil burns blacker and an engine that revs itself higher and higher perpetually.
okay. Share the solution to avoid run away. DRILL A SMALL HOLE (3/32 inch) under the air cooler. This will let out the accumulated oil inside the cooler. Don't worry about drilling. it will not cause a problem, it will be a small air leak. The turbocharged intake system has positive air pressure at all times. If there is an oil leak through the hole (drilled) you will be avoiding the run away. If no oil comes out, it means turbo in good condition. No need to worry! the hole made can remain, it does not represent a problem. it will even avoid the run away. It will act as a damaged turbo indicator
First of all, that was a HECK of a tiller! Second: That tiller just wanted to do SOME WORK! He could have got the whole garden done with that runaway! But he would have been flapping in the wind behind it,
I thought my old 4 cycle 8HP was a big boy
2:54 bro just had enough already😂
Keep reading people sayin you kill it with covering with rag but due to the runaway it has so much suction it could take your hand. Whatever you block the intake with, don't let it be you.
I once had a vintage diesel tractor run away. I attempted to choke it out with a block of wood. It kept running as if were an airfilter. Only dumping the clutch worked with brakes fully engaged. Regardless of how and why, scary stuff
12:00 gramps knows what's up, and he ain't given up on that ol' 200yo cast-iron king
I can't quit laughing at the first one, dudes getting whiplash in that truck 🤣🤣🤣
I love the guy that just walks away…that’s precious !
7:20 crazy it went from barely running to turning at like a motorcycle RPM
How funny is that one with Big Floyd, go from "i cant breathe" to "please choke me" 🤣
Amazing how high the tiller revved.
amazing that it held together considering it was knocking badly even at low revs.
It was also perfectly balanced.
For anyone curious, the roto tiller or whatever it is at 6:50, assuming it is a single cylinder two-stroke, reached a peak rpm of about 5600 rpm. It sounds so much higher because we are used to the sound of four-stroke engines, which would spin at 11200rpm, but in fact it is only half of that. Still pretty impressive for a piece of antique farm equipment
I love my ignition engine just that much more after watching this.
I can confirm from a plate check EX04 XOA blue Ford focus is no longer with us. Never turned up for it's annual test in 2020, I wonder why.
George Floyd
The black truck puller hooked to the sled is my favorite. It shakes itself to pieces.!
One way to stop a runaway engine, is to put it in highest gear, hold the brake and release the clutch (if it has manual transmission). That might not exactly be good for the engine, but neither is the runaway.
I think a couple of them did that - You can see a lurch then it stops suddenly.
Won’t that make the transmission explode
@@tim8801 The transmission won't explode, but rather the transmission gears brake if it's build very weakly compared to the power to the engine. But if the transmission is build strong enough for aggressive driving with the current engine, it should also be able to hold up for a sudden clutch release in the highest gear.
I actually had a petrol 2 stroke bike run away a couple months ago, very scary :D It's a Aprilia RS50, I was driving around 85kph in 6th gear and somehow it went out of gear and started revving as high as it can. I stopped and turned off the ignition immediately but it kept revving, I'm assuming because it got too hot because it was running leaner than it should and the A/F mixture started to combust by itself because of the high compression and heat. I then closed the valve on the tank to stall it out, put in a high gear while risking my clutch and let off the clutch, fortunately it stalled. After I sat back and smoked a stress-cigarette, I tried to start it again and fortunately nothing broke and it was running fine afterwards but holy fuck did I piss my pants hahaha
Cool video.
You can hold something on the air intake. An engine can only run with fuel and air. In case of a runaway Diesel engine, in most cases the engine burns engine oil, often from the turbo charger. Then you can‘t stop the „fuel“, but you can stop the air, by closing the air intake.
7:00 that tractor that sounded like a motorcycle before the guy said "Oh schiezer" was funny.
The fact no one tried to block the air going into the intake baffles me!!! The throttle isn't the issue people, you need to stop 1 of the major components of a combustion to occur. Air is your best option, unless you cut your fuel line and that wont help if shes too far gone 😂🤷♂️🤘
For memory there is a company in the USA that makes a emergency shut down kit that fits to the intake manifold between the turbo and th engine inlet manifold.
Some hilarious examples of "I've tried nothing and I'm all out of ideas!" 07:53 "Oh Scheiße" indeed matey.
06:20 sounded like he put it in fourth gear and dUmped the clutch. Automatic transmission be damned
2:07 its scary how powerful engines really are if they are pushed to their limit
9:52 What a nice sound!!!!
9:25 It's no use, that guy is deaf due to that screaming Duramax.
interesting to see it happen to two MK4 golf's: Their engines(usually the 1.9TDI PD) has a special valve that closes upon turning off the ignition. It's called the Anti-shudder valve(ASV) and is meant to stop the engine from sucking in air when the car is shut off to prevent that lumpy shaky stall most diesels have(as when you turn them off, they basically turn into a giant air compressor) when the engine runs away, all that's needed is to turn the ignition off; the ASV will close and stop any air from getting to the engine. Or, if that fails, you can pull the arm manually from under the bonnet(it's a small arm attached to a vacuum solenoid, left of the EGR valve) and the engine will be 100% starved of air. i must add(and this is probably why they ran away) that EGR deletes are very popular on the 1.9TDI platform. Unfortunately, the ASV valve is part of the EGR. when it's removed you lose this last resort valve in case of a runaway.
All engines are giant air compressors any time they're turning - it's just that they have some fuel (and or ignition) added into the mix to make it self sustaining
Im just going to add a valve when I upgrade the turbo. The engine is not complete without the delete. Noticeable power increase and went from 35-40 mpg to 60-90 mpg.
6:32 That is gonna be interesting, since these engines are OLD!! Let's see if it will sound like a harbor freight engine (Like a Predator 212cc for example.) or a bit like a 4 stroke dirt bike!!!!
These situations, scare me, but I hold calm, and control it. (I wish it was that easy...)
GOD DAMN That first one went so hard I thought it was the brakes for a moment glowing red hot.
That dude who gives up and lets the hood slam at ~3:00 is too funny
#12 sounded like it was already knocking, I'm not surprised
10:32 Stopping the runaway the NERDIE WAY!!! YESSIR!!!!
I think the funniest thing about diesel engine runaways is theyre avoidable if you spend a little money on an air shutoff.
oh man 2:47 that guy has the look of disgust. he just knew it was done lol. slammed his hood down and just walked away.
IS THIS VISORACER?! YES!
I've gotten to witness a couple run aways. I cheered like I was at a spots game.
The narrator speaking at the beginning” YOU CANT PREVENT A RUNNAWAY ON DIESEL TRUCKS. the only way is to keep your engine seals changed on a regular basis but even then if you get oil into the turbo it will just keep going with runaway. And the only way to stop it is to cover the AIR INTAKE. this will stop the engine. Use a bit of flat wood or a old jacket or jumper. Anything to stop air getting into the engine.
Co2 extinguisher right into the intake
I knew a guy that had his combine runaway on him It started a fire because of the fodder against the overheating engine.
it amazes me how few people know how to stop this. i was a heavy equipment operator for 23years. i saw it happen several times. if you have a fire extinguisher, blow it right into the air intake. it will smother the combustion inside the engine.
2:53 The moment you know your car is done for. Poor guy. :(
Geez that first one is the most violent runaway I've seen
The amount of people who don’t have a kill switch is wild! 700hp Duramax and my 950hp race 5.9 Cummins both had opposite flow kill switches.
Feel bad for that elder man at 11:12. And for that historic engine.
BRO STOP
Good thing those black trucks at 2:00 and 2:15 never unhooked , Could of ended very badly wow !
yeah, it's good that this beast remained on the chain
@@CheckEngine69 Roger that !
We just had our excavator run away and my buddy isnt afraid of much but that day was the first time i seen him afraid of something 😂
Yessir!!!! Hope one day this videos blows up!! (Since deserves WAY more views and likes!! Like 100K views with 30K likes, at least!! Max of 1 MIL views with 300K likes!!!!)
If you have a diesel car with a **manual transmission** that goes engine runaway: stop the car (if moving), handbrake on, shift into the highest gear (5th or 6th gear), and stall it.
The guy in clip 9 tried that first, and burned out his clutch.
6:32 how did that stay in one piece? 😮
"You can't park there, mate" 😂
Vast majority of people don’t need to worry about run away engines as it is very very uncommon.
7:06 - Imma go 2-stroke, man!
Cloth seems to cause a lot of problems but is often expedient. I've seen people use small wooden boards to good effect, though it seems like the sometimes leak air.
New turbo is better than new engine or vehicle.
That guy in the ford at 6:15 got it figured out might not be optimal for all people but it’s the fastest solution in the case of a mt vehicle
Never know there were so many small cars with diesel engines.
So u can't put a contingency mechanism in place at the intake or exhaust?
I like how In #9 the announcer is giving instructions on how to fix it
*New fear unlocked for my Passat* 🥲
If I had a manual transmission, I think I would put it in a higher gear and pop the clutch while holding the brake down to try and stall it.
Could just hang on and enjoy the ride ? 😂
Covering the air intake is the only way to stop it and that can be both a bitch to do and kinda scary
Using a block of wood is one way
bros truck turned into a steam locomotive 0:03
I never knew the Ford focus had a diesel engine
#3 that was a MAD DOG😏
What the?!?! Was not expecting it to go past 8,000RPM at 7:27!!!! It sounds just like a dirt bike!!!!
Maybe a bad idea this is not anything I really know about but why not keep a decent sized co2 extinguisher around just for this to spray into the intake?
7:30 And the RPM just keeps rising!! When will it stop?!?!
It can go 'til it blow 😉
Diesel runaway is caused by the failure of the turbo oil seals. This allows oil into the intake, and the engine starts running on it's own oil. This typically takes the engine WAY past redline and turning the key to off does nothing. The only way to stop it is to put something over the intake that prevents air from entering the engine.
GM 2 stroke diesels have a spring loaded flap that shuts off the air flow instantly, just scored an old generator, 6V92T motor, got electric and manual shutdown flap, simple :):):)
Where did you get the thumbnail from? You know, where the bulldozer is shooting fire out of its exhaust in a cold mountain area?
Wow, a 7,000RPM Duramax at 0:04 BEFORE it runaway?!?! NICE!!!! Hopefully one day Duramax engines can 7,000RPM with no problems!!!! And I LOVE CHEVY, better than Ford and Dodge COMBINED!!!!
Tapar la entrada de aire del colector del motor con un trapo o una camiseta, o meter la marcha mas larga del motor y soltar el embrague (en vehículos con cambio automático solo se puede tapar la entrada de aire. Asi se para.
This is why I always have something to block the intake of my tractor if it trys to run away.
I wonder how many miles worth of a modern cars emissions 1 of these runaways would equate to. Damn impressive smoke show!!
So to put it simply, to prevent runaway diesel, take care of your engine
Can you put in higher gear like 3rd gear and choke the engine (just asking)
I remember clip 9 when it came out; this is just the end of a much longer clip. Earlier he tried to kill it by dumping the clutch in high gear, and just burned it out.
That is how good the Chevrolet Silverado Duramax runaway was, to have 4 PARTS!!!!
did you really feel the need to comment 12 times when you could’ve kept it in one message
@@ZGoldDriverOfSavage I was just about to say that
There is something you can do to stop it sometimes it’s just too scary to get to the intake when the engine is full boar
#12: NASTY rod knock or whatever that is. Then it goes off the rails, but it "self-corrects" quickly. When it finally dies, the operator: "Scheiße..." 😛😛😛
How many miles or hours are on a diesel when it does this?
Dude looked like a pin ball in that gmc 😂
If your engine has an important oil leak, you know it as soon as you control the levels frecuently... and leaving a failure so bad, leads to dramatic scenarios like that...
Why hasn’t anyone putting a slide plate in the air intake. Control it from the cab. No air no run.
That's why you make a valve to shut off the air intake or carry some plywood to cut it off... Will have a lot of suction lol.
I love how many harp seals, polar bears, and just stop oil protesters died of heart attacks just watching this video. #EpicWin.
7:36 That engine ran better than every other diesel ever made in south asia.
What about manually closing off fuel line if it is accessible on a given vehicle ?
diesel isn't the problem, its engine oil.
Push in the clutch or put it in neutral and just let the engine blow. That’s the safest.