Power Wagon Registry

Holy Crap! Watch this to the end of the video!

http://youtu.be/xRG_T580Heo

"2015 GMC 2500 Duramax Runaway Engine
Pulled up to open gate, engine started to rev up, turned off ignition, engine never shut off. CRAZY Runaway! Tachometer red lined until it destroyed itself. Odometer reads 3378 miles! Still not sure of all the damage done."

Crap! LMAO The end is right.

I wonder what made it run away in the first place????

The only way to shut down a diesel. Shut the air off or the fuel. Bet the fuel pump went bad, and it was leaking.

One of the things that can cause a runaway engine is if the turbo blows a seal on the compressor side. The diesel is called an oil burner for a reason. The turbo can cause a runaway just as easily as a fuel system failure. A turbo induced runaway is far more common on the electronic fuel systems used today.

Years ago when I was wrenching in the USAF the mechanical fuel systems back then were a real risk if not set properly. The 6V71, 8V71 and 16V71 were all equipped with a mechanical safety shut down. It was a metal flap that was spring loaded to cover the air inlet to the blower. I had a front loader take off and the only way I got it shut down was to knock the fuel filters off with a sledge hammer. Seems the guy who set the fuel rack screwed up, so I got stuck with the surging throttle (lope) complaint on a service call. The operator started it to show me the surging idle problem and how it hung up at full throttle. Then it just took off. I never asked or told him to do anything, he just jumped in and we were quickly in trouble. The safety flap was seized so I was in serious trouble at that point. The thing ate all my shop rags without a single hiccup! My sledge hammer cut the fuel and it died.

It is similar to this when it is a fuel rack problem. Not much time to make a decision but it can be saved if you are quick.

Clickable link for Tapatalk

I don't know what I'll do if the engine in my truck ever runs away....it is one of my concerns with a diesel. It would take too much time to pop the air cleaner off and stuff a rag in there and that might not even stop it.

azracer wrote:One of the things that can cause a runaway engine is if the turbo blows a seal on the compressor side. The diesel is called an oil burner for a reason. The turbo can cause a runaway just as easily as a fuel system failure. A turbo induced runaway is far more common on the electronic fuel systems used today.

Years ago when I was wrenching in the USAF the mechanical fuel systems back then were a real risk if not set properly. The 6V71, 8V71 and 16V71 were all equipped with a mechanical safety shut down. It was a metal flap that was spring loaded to cover the air inlet to the blower. I had a front loader take off and the only way I got it shut down was to knock the fuel filters off with a sledge hammer. Seems the guy who set the fuel rack screwed up, so I got stuck with the surging throttle (lope) complaint on a service call. The operator started it to show me the surging idle problem and how it hung up at full throttle. Then it just took off. I never asked or told him to do anything, he just jumped in and we were quickly in trouble. The safety flap was seized so I was in serious trouble at that point. The thing ate all my shop rags without a single hiccup! My sledge hammer cut the fuel and it died.

It is similar to this when it is a fuel rack problem. Not much time to make a decision but it can be saved if you are quick.

phpBB [video]

Clickable link for Tapatalk

Had this happen to a diesel generator I sold a few years ago. Brand new John Deere engine blew a turbo seal and ran away. Destroyed the engine, generator end, and the radiator. That was one hell of a warranty claim! Like you said, more common than you would think. Most oil field engines have an air intake shutoff. When overspeed is sensed it shuts of the air supply. Good thing to have!

Sent from my Samsung Galaxy Note 3.

Years ago. I watched a M60 tank run away. They was working on the engine. Had the engine cover off, air cleaner off. They was making some adjustments on it. Sudden it took off. Watched a guy stick a clip-board over the inlet. The engine died down alittle. The clip-board started to bow in. Then it was gone! When everyone seen that happen. We all took off. A couple of seconds later. The engine was all over the shop. LOL

I'm trying to figure out if the truck drove by a mirror right before this happened........

sent from my telegraph using Tapatalk too!

Jesus man! I just spit beer all over my keyboard! That was frikin hilarious!

I'm not a diesel guy, but what are the chances that emptying a fire extinguisher into the air filter would cut air flow enough to kill the engine?

Think it would depend on the type of fire extinguisher. Powder or Co2.

I would think that CO2 would displace the oxygen enough to stop combustion, but who carries a CO2 extinguisher in a truck? A CO2 PowerTank might be effective if you could get to it in time. A dry chemical extinguisher might block the air filter enough to be effective, if the filter is in place. What about Halon?

This is something I have thought about but honestly I am not that worried about it. If my truck ever runs away, I will destroy what ever I have to to get the airbox lid off and get something large stuffed in there (big and bulky like a coat) to at least try and slow it down, or if it gets sucked in and destroys the turbo that's only a couple thousand to replace a turbo vs. the entire engine. The other alternative is I always carry a chemical extinguisher in my truck, and if method 1 doesn't work, I'll let the extinguisher off in it and try and snuff it. Very bad for the motor, but still cheaper than seizing the crank or windowing the block. On my tractors it may be a little harder as it's not a quick process to get to the air cleaners, and I don't carry extinguishers on them. I have never known anyone first hand that had a run away, so I'm not going to worry and loose any sleep over it. Sad to watch these videos of them running away and the poor owners just stand there and watch it die.

Would a knife through a fuel hose not be the quickest and probably easiest solution?

Then you would have a fire. There is a lift pump in the tank, then the pump on the motor. You cut the line between the tank and the motor. You now have a fire hose in your hand. But I do agree on shuting off the fuel some how. Install a valve in the fuel line that is easy to get to.

Didn't really think bout that lol... was thinking under truck some where mid stream so as to be away from engine bay and hopefully exhaust. Would also depend on where the soft lines are. If you had a pair of vise grips or the like you could clamp off a soft line probably.

not all runaways are fueled buy fuel from the tank..........better to stop the air.

This is a truck that my company actually worked on... This company is called Air Hygiene in Tulsa. One of our guys serviced the truck the day before and then they had a run away motor. So naturally Chevy blamed it on us and we had to pay $28,000 for a new duramax. There is no way that our guy messed up on this. I want everyone on here to know that the duramax is a piece of cow turd and is not worthy to be called a diesel. My buddy lost his job bc GM would not take responsibility