Had a comrade with way to much oil in the pan.
The engine started to suck in the oil via the CCV.The engine started to run slow but accelerated itself real quick. We blocked the air intake which was hard because the engine sucked air in through the plastic seals.

It happened in really hot surrounding ambient temperature.

 

I had a GM 6.5 die on me so I get it to the side of the road and try to re-start. Took a couple of trys til it started, RPMs were bouncing from 2 to 35. Shut it down and tried again, idled fine for 15 seconds and it shot up to 5200 with me standing outside. Tach said 5200 when I got the key off. Changed the PMD and she ran another 200 miles before it put windows in the oil pan.

 

2 weeks prior, I just overhauled a 5.7 diesel. Anyway, I was cruising in Billings on the way to Wyoming and the fuel cutoff burnt out. So I took it apart and someone says, "tie this lever open". So I did, started er up, and away it went. About 15 secs into it, I said heck with it, let it throw a rod. Well instead, I jerked the intake bridge off, and stuck my hands over the manifold. It slowed down enough to where I could remove the fuel line off the filter. Well 2 weeks later, it broke the crank in two places.

 

I've never had anything that wasn't tweaked run away, but I've had my truck runaway at least three times.


Then again, it's not nearly as scarey when you turn on the engine fully expecting it to runaway.

If I was trying to start an engine that I hadn't played with before and it ran away on me, I'm sure that'd be a lot scarier.

 

Not sure bout the modern turbo diesels but it can happen on N/A diesels too, they get goin and you try to shut them down at high rpm and they will not shut off, happened to our HD10 but we managed to stall it after the second building we hit. My IDI has a manual valve to cut fuel, there it a warning that it'll screw the injection pump but it's better than an engine.

 

I had a 7.3 run away on me, from now on I remember to make sure it is in park

 

Have you guys seen tis video? This is Josh Ayers 500rwhp 1st gen running away...

 

hahaha thats classic ^

i had this happen twice actually. I had a 1952 mercedes diesel runaway on me once at the shop i worked at, it shut off on its own after about a minute, turbo seal was leaking and it started running off engine oil.

And another was on my buddies Link Belt excavator, it had a shitsubishi 8 cylinder. he couldnt figure out that you had to pull the shut off cable that went to the IP so he tried to stall it out. lets just say its even scarier to watch a diesel run backwards and blow up haha.

so here's a question, has anybody else seen a diesel run backwards?

 

Yes.

 

Ive had a sticky pedal...Does that count