Runaway Peterbilt

[racrguy]

Battery cut off and clamp/disconnect the fuel line?!

Some trucks have ball valves at the fuel tanks and you can shut them down that way. Apparently this one didn't. You kill a diesel engine by shutting off the fuel supply.

[ram57ta]

If that was a turbocharger bearing failure which is what causes a lot of turbodiesel runaways....cutting the diesel fuel off wouldn't stop the engine because when the turbo bearing fails the oil supply which feeds the bearing is now being blown into the engine and burning as fuel uncontrollably...the only way to stop the engine at this point is to cutoff the AIR being drawn into the intake, wait it out from a safe distance until the engine oil supply runs dry, or the engine blows up, seizes, throws a rod or 2, or the turbocharger seizes up. Most of those options are going to be terribly expensive to repair.

[jw33]

yeah the engine was ingesting the crankcase oil through the turbo charger supply and running off of it. The only way to stop it is choke off the air or shove it in high gear and physically stop the engine. Sled trucks usually have a big ass spring loaded plate deal infront of the turbo inlet that they can pull a pin on and shut air off to the motor if it runs away like this or the injector pump gets stuck. You could tell he was on the phone with his boss and he was telling him to shove it in gear to try and stop it.

[diablo rojo]

If that was a turbocharger bearing failure which is what causes a lot of turbodiesel runaways....cutting the diesel fuel off wouldn't stop the engine because when the turbo bearing fails the oil supply which feeds the bearing is now being blown into the engine and burning as fuel uncontrollably...the only way to stop the engine at this point is to cutoff the AIR being drawn into the intake, wait it out from a safe distance until the engine oil supply runs dry, or the engine blows up, seizes, throws a rod or 2, or the turbocharger seizes up. Most of those options are going to be terribly expensive to repair.

Learn something new everyday :beer:

[jyro]

co2 fire extinguisher into the breather?

[jw33]

That might work.

[stephen4785]

Like ram57 said- only way to stop a runaway is to block the intake. Take off the inlet hose to the turbo and stick rags or something in it. Phone books work well to block the intake. All the diesel shops I worked for had phone laying around just for that purpose. But getting someone with enough balls/stupidity to try it on a runaway is another story. I´ll just sit back and watch it burn until it stops.

[ram57ta]

Learn something new everyday :beer:

I learned firsthand when I worked at DART when the turbo failed in a 2001 F350 Powerstroke.

Get on Youtube and type in "runaway diesel"....you'll find tons of videos...hell some people buy old turbodiesel cars and trucks just so they can film them blowing up. Most of the car videos are from Europe where turbodiesels were very popular in the early 80's.

[diablo rojo]

We service our trucks every 10,000 miles, so I haven't had much experience with major breakdowns like that. My truck is sitting at 518,989 and the only system I ever seem to have trouble with is the EGR/Regen. I try and listen to other drivers when they describe issues and solutions because I spend a lot of time in deserts and mountains.

[Ratt]

I learned firsthand when I worked at DART when the turbo failed in a 2001 F350 Powerstroke.

Get on Youtube and type in "runaway diesel"....you'll find tons of videos...hell some people buy old turbodiesel cars and trucks just so they can film them blowing up. Most of the car videos are from Europe where turbodiesels were very popular in the early 80's.

Are you saying they aren't anymore? Turbodiesels are still very popular in Europe...and everywhere except here...

[krazy kris]

Shoot the fucking thing

[ram57ta]

Are you saying they aren't anymore? Turbodiesels are still very popular in Europe...and everywhere except here...

No...I'm saying you wont find any runaway videos of American CARS because none of the American diesel cars used turbochargers (the Olds 350 diesel was failure prone enough without a turbo). The ONLY 80's TURBODIESEL cars were foreign made...Mercedes, VW, Audi, BMW..and I'm sure a few others.

[soap]

wow.

[mstng86]

The obvious answer is to power through it.

[YALE]

Please explain how that's possible.

An old pre-turbo IDI with bad rings sucking oil up through them, is what I was told. Sorry. That wouldn't be a powerstroke. My bad. I was just across the shop from it. I didn't have anything to do with it.