"Runaway" 2015 Duramax

[2018GMC]

I was searching for reviews of 2015 Duramax trucks and came across this.

* Disclaimer - this doesn't end well....*

 

 

 

 

[Kent2500]

Info on runaways ->

[j-ten-ner]

Does it read "AIR HYGIENE" on the decal at the passenger door?

 

Runaways aren't rare. Doesn't take much.

With all the technology nowadays one would think that the engines are kind of protected with some shut down system.

I mean it can't be so hard to have sensors cutting off the air supply.

 

so long

j-ten-ner

[servantsalesmen]

Now that is an impressive failure! Wow

[DaveH71]

Runaway's aren't something to dick around with. These guys are idiots for walking up to that truck like that after it burned through all its oil.

 

Don't EVER try to stop a run away, just get the hell away from it and get an extinguisher. Anyone who tells you to block off the intake is a moron, leave the hood down and get away.

 

There are aftermarket air shutoff set ups, runaways aren't super common so i'm guessing manufacturers don't include them because of price. Wouldn't be a bad thing to have though.

[BIGBurton13]

This is why you don't use injector cleaners on diesels. Used to work in a shop and a tech found that out the hard way by hitting a wall. Luckily for him, it didn't run too long before shutting off.

[DaveH71]

Injector cleaner liquids are fine on diesels. A runaway is caused by the engine running off its own oil. The turbo is cooled and lubricated by oil that runs through it. If that oil seal fails in the turbo the engine will start to pull

 

oil from the oil pan, through the turbo and run off of that oil until it either seizes from lack of oil or sends something through the block.

[BIGBurton13]

In my case, it was in 2004 and was caused by injector cleaners. I'm sure now days they have diesel specific.

[j-ten-ner]

... A runaway is caused by the engine running off its own oil...

 

A stuck centrifugal governor on older engines can cause that too.

Back when I took my apprenticeship we were doing some repairs in the bulldozer repair shop.

One day a young journeyman replaced a worn out engine with a rebuilt one. Those engines were stored outside for years.

Anyway he fired up the engine and next thing I know is the head mechanic yelling "Everybody out!".

I've never again heard a 13.5L 4cyl diesel engine screaming like there is no tomorrow.

The result was devastating.

The governor was rusted tight. Or the linkage. Can't quite remember.

Turned out that the guy did not check on the centrifugal governor as he was supposed to for the very reason.

 

lol

so long

j-ten-ner

[CAtaylor]

Had a buddy pull up to a natural gas compressor station one night. Obviously the compressor went down because of a low pressure due to a gas leak. Once the gas got to the intake of the truck it did the same thing. Needless to say it was not good for the truck, the compressor station or my buddy and he was under the hood trying to shove a rag in the intake when it went. He lived through it but it was many months in the hospital burn unit and still going through reconstructive surgeries 5 years later. IMO anyone working in the oil and gas service industry should have an Air Intake shutdown valve installed if your company doesn't provide it, 800-1200$ depending on manual or automatic for automobiles. We have regulations in the offshore oil and gas industry stating that we have to have them on all diesel engines. Manual shutdown if they are continuously monitored while running and if not they have to be automatic; we use the electric ones tied back to an over speed switch for these. BD Diesel has some good ones for automobiles.

 

http://www.summitracing.com/search/Product-Line/BD-Diesel-Positive-Air-Shutdown-Valves/?keyword=BD+Diesel+Valves&autoview=SKU