Run away diesels

[mabc926]

Void

Void

 

[GenLightening]

If a turbo seal or the CDR goes, they can introduce oil into the intake and there it goes. A piece if wood over the intake is about the only way to stop it with an automatic. Dumping the clutch on a manual will work, if your clutch is good. That's one of the sounds I really don't ever want to hear!

 

[Dieselcrawler]

look at the idi's are worthless thread. the vid there has a runaway idi.

 

[rjjp]

I plan on taking a lesson from detroit diesel and putting a butterfly in the air intake.

 

[LCAM-01XA]

I plan on taking a lesson from detroit diesel and putting a butterfly in the air intake.

That's a good idea, any suggestions on where the proper (for our engines) 4" valve can be obtained for cheap?

 

[rjjp]

I was just going to make one.

 

[LCAM-01XA]

Ah, well I like salvaging parts and reassigning them new duty - for that I think a trip to the junkyard may be in order, looking for a Detroit Diesel in a wrecked medium-duty truck...

 

[rjjp]

Ah, well I like salvaging parts and reassigning them new duty - for that I think a trip to the junkyard may be in order, looking for a Detroit Diesel in a wrecked medium-duty truck...

If you're looking for it that way then why not use an aftermarket exhaust brake?

 

[LCAM-01XA]

Cause I never though of it... lol. Also, what are the chances of finding one in the junkyard? And if I do find one, it sure as heck ain't going on my intake - instead heads will be coming off for new valve springs, guess with what evil intentions

 

[Diesel JD]

I had it happen. It was from a bent throttle linkage. I think an IDI with blowby like the Detroits had to cause this problem probably wouldn't be running, but I guess turbo seals or something like that could cause it, but it would probably just make a huge oil leak instead. I think we are at risk when we do any work to the IP, especially taking the governor cover off for any reason. If you do that I'd recommend having a clean piece of plywood or hardbound thick book nearby to clap over the air intake. I've also heard some people who work on 6.2/6.5 diesels say this can be stopped by pinching the main return line from the IP shut with vice grips(only works in later models with flexible main return line, 83-86 at least has a hard steel return) this over pressurizes the hydraulic head and causes a shutdown. You could also cut the fuel supply line. The fuel line/pump ideas depend on it being a fuel related runaway. If it were from oil vapors as with the detroits then you'd have to shut off the air.

 

[White Trash]

Not an IDI but I lost the turbo on my 3406E CAT a couple years ago and it fed off of oil and tried to run away but I got lucky and realized what was happening before it was a problem. I pulled into a rest area in 7th gear doing about 5 mph with the engine trying to pull HARD to get away. I shut it down and held the brakes and it died hard. When the hired wrench got there he was amazed I got it shut down, as I said I got lucky as I'm no ninja driver.

 

[jim_22]

You got to be ready to rip your shirt off and stuff it in there. Cutting off air is the only way because it is drinking its own blood.

 

[Dieselcrawler]

it will suck your shirt threw. i have seen detroits tear threw a phone book.

 

[TWeatherford]

I've heard they'll eat shop towels and shirts like nobodys business. Also heard someone tried to plug one with his butt, certainly wouldn't recommend that.

I get a big 4" thick phone book to slap over the intake after I've been messing with stuff. I figure first I'd cut the fuel line (I have rubber going almost right to my IP) and then put that over it, and then run away. A friend of mine helped swap a bunch of the military vehicles from 6.2 to 6.5 engines and said they always had a phone book ready, about 1 in 6 would try to run away at first startup.

 

[Abull78]

That's a good idea, any suggestions on where the proper (for our engines) 4" valve can be obtained for cheap?

you can get a spring loaded knife blade, much thinner than a butterfly, this is standard safety equipment in the super sport pulling class. you can get them from industrial supply places.