Runaway diesel?

BigWaylon

BigWaylon

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Exactly what is going on here?

(Here’s the correct video)

www.instagram.com

170K views · 13K likes | Diesel Dudes on Instagram: "Well that’s one way to smoke out an intersection! #runawaydiesel ————————————————— Video credit: @aj_levchenko ————————————————— ‼️20% off DIESEL POWER GEAR‼️ ————————————————— #cummins #duramax #p

14K likes, 337 comments - diesel__dudes on July 3, 2019: "Well that’s one way to smoke out an intersection! #runawaydiesel ————————————————— Video credit: @aj_..."
www.instagram.com www.instagram.com

I don’t think it’s in gear, right? Seems like you’d hear the motor and or/tires more.

(Here’s the one I posted in Dance Party, but I’ll leave it here for you to enjoy)

www.instagram.com

558K views · 31K likes | World Dance Academy 🔵 on Instagram: "Boom Boom Boom 💣💣💣 @pride_evy @made_in_star ⠀ ⠀"

31K likes, 301 comments - world_dance_academy_ on October 27, 2021: "Boom Boom Boom 💣💣💣 @pride_evy @made_in_star ⠀ ⠀"
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Jerzsubbie said:
Ummmm is that the right link? It brings me to this… View attachment 392533
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Dang it. I posted that one in the Friday Night Dance Party thread. Guess when I copied the link for the truck video something went wrong. Lemme see if I can find it. 🤣🤣🤣
 
Added the correct one to the OP. 🤓
 
Looks like the governor got screwed, injection pump is pumping at max rate - and with a diesel that equals max RPM with max fuel input.

It's not in gear, the smoke is coming from the tailpipe.
 
She would have some smoke billowing for sure. Probably from my overworked lungs lololol

@BigWaylon way to start the night off right.

Sent from my SM-G965U using Tapatalk
 
If I could hear the truck I could confirm for sure. But usually the engine starts pulling Indy car RPMs as it starts using oil instead of fuel. If you can’t cut the air supply off it’ll go until the internals give out from heat/lack of lubrication.
 
Looks like a 6.0 powerstroke but video is bad and I might be an idiot. A 6.0 does have a throttle from the factory(really just for fighting nox i think) but if you're tuning and deleting them, that goes in the trash.
 
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DCGallim said:
D

Runaway diesel not running in fuel. It’s pulling oil from the pan. That’s why the smoke is white.
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If you cut air, engine cuts off. Runaways are less likely in a stock truck that has a throttle. I have made a throttle delete part before and that's why I'm kinda scared of that part.

No air

no bang

no rpm
 
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DCGallim said:
D

Runaway diesel not running in fuel. It’s pulling oil from the pan. That’s why the smoke is white.
Click to expand...
Yes I'm talking about a normal throttle like on a gas burner. These powerstrokes have one.
 
DCGallim said:
If I could hear the truck I could confirm for sure. But usually the engine starts pulling Indy car RPMs as it starts using oil instead of fuel. If you can’t cut the air supply off it’ll go until the internals give out from heat/lack of lubrication.
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I remember some discussion around that when I was tuning the ‘89 D350 (first year they used the Cummins IIRC). Had to be careful adjusting the screws. But it didn’t take much $$ to up it from ~17lb of boost to >50lbs. 😎
 
He is just waiting for his truck to finsh the block window treatment cycle!
 
Notacop said:
If you cut air, engine cuts off. Runaways are less likely in a stock truck that has a throttle. I have made a throttle delete part before and that's why I'm kinda scared of that part.

No air

no bang

no rpm
Click to expand...
Good luck cutting air to that screaming scalding hot engine that is coming apart at any second.

Smart man will walk away and let it go boom cause its damaged anyway
 
Not that anybody reallly cares, but on the non cummins or mechanical fuel pump trucks (big rigs and 1st and 2nd Gen dodges I think), you normally see turbo related runaways or oil leaking around injector seals, the old mechanical injection trucks are the ones that could run away if you mess with the pump too much.
 
CarolinaColtCollector said:
Not that anybody reallly cares, but on the non cummins or mechanical fuel pump trucks (big rigs and 1st and 2nd Gen dodges I think), you normally see turbo related runaways or oil leaking around injector seals, the old mechanical injection trucks are the ones that could run away if you mess with the pump too much.
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We had kill handles in the cab of our bobtails in the AF. always fun the F with a new guy while the were driving by pulling it.
 
Mike Overlay said:
Good luck cutting air to that screaming scalding hot engine that is coming apart at any second.

Smart man will walk away and let it go boom cause its damaged anyway
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A stock 6.0 can that's what I'm saying. I bet this one was fully deleted
 
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Notacop said:
A stock 6.0 can that's what I'm saying. I bet this one was fully deleted
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Can you explain to me how unplugging or blocking off a EGR valve and deleting a coolant passage makes a 6.0 more likely to run away? I’m genuinely curious….
 
CarolinaColtCollector said:
Can you explain to me how unplugging or blocking off a EGR valve and deleting a coolant passage makes a 6.0 more likely to run away? I’m genuinely curious….
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It doesnt. The removal of a throttle plate/body and replaced with non plate/valve body will. No way to reduce air intake in order to keep rpm low due to run away situations is what he is referring to
 
Mike Overlay said:
It doesnt. The removal of a throttle plate/body and replaced with non plate/valve body will. No way to reduce air intake in order to keep rpm low due to run away situations is what he is referring to
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I gotcha. Yeah, two different systems but both can run away.

The 7.3’s and 6.0’s are HUEI systems, so they don’t have throttles like gas engines to in terms of intakes/butterfly valves. They use hydraulic pressure from the oil to fire the injectors with the use of a IPR (injection pressure regulator). If you want more throttle the valve opens more for the oil feed. The fuel is a constant 55-60psi driven by an electric fuel pump but the oil system can easily reach 4000psi on the rails over the injectors. If you pop an oil seal on the injector bodies you’ll definitely have a runaway if you can’t get the intake blocked off, or if one of the lubrication bearings goes in the turbo… yeah. No bueno.

@Fordtruckfan89 knows more about mechanical pumps than I do, I don’t touch that chit.
 
CarolinaColtCollector said:
I gotcha. Yeah, two different systems but both can run away.

The 7.3’s and 6.0’s are HUEI systems, so they don’t have throttles like gas engines to in terms of intakes/butterfly valves. They use hydraulic pressure from the oil to fire the injectors with the use of a IPR (injection pressure regulator). If you want more throttle the valve opens more for the oil feed. The fuel is a constant 55-60psi driven by an electric fuel pump but the oil system can easily reach 4000psi on the rails over the injectors. If you pop an oil seal on the injector bodies you’ll definitely have a runaway if you can’t get the intake blocked off, or if one of the lubrication bearings goes in the turbo… yeah. No bueno.

@Fordtruckfan89 knows more about mechanical pumps than I do, I don’t touch that chit.
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6.0 does

Here's one
 

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I haven't seen it on a late model.

I have seen GM 6.5 turbos runaway when the turbine bearings fail and she gets oil.

2 stroke Detroit's would do it, common enough the later ones had emergency air shut offs for that reason. They could also fire backwards if you stalled them and do both.

Choking off the air works, but it takes very near 100% before they quit running which is not an easy task with random stuff at hand.

It doesn't sound good, just loud AF, worse when it's a motor in some small space you have to climb in to access rather than raise a hood.
 
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