i was a wrecker operator / mech in the Marines and was coming into the shop to hear and then see a LVS in a "run away" the LVS [logistics vehicle system] is an 8V92 gold 2 stroke turbo blown monster ................she took off and we smashed the fuel water seperator in hopes of killing the fuel, sucked 4 sets of coveralls into the intake trying to choke it and even had a clip board sucked into the airbox before the blower finally let lose..............you could slide a 9/16ths wrench under it ...............it was warped that bad ................upon tear down we found that it had consumed every bit of oil in the pan and started to suck it up like a beer can [thats bout 7 gallons of oil] and the rotorsof the blower were glazed with cover all colored "glass" [melted cotton]- - best we could determine was the ether system failed and she took a full bottle of ether on startup and never came back down................

pretty much a 3000lb paper weight ............and i have perminant hearing damage from it - [tone damage i should say]

 

I thought a modern 4 stroke would only go to runaway if you put gasoline in by mistake,I do remember working with detroit diesles and they all have a very stout butterfly on the intake I assume it is to stop runaway.

 

Blown turbo seals, ingesting gas fumes, and any kind of stuck throttle stuff or tampered pump adjustments are good ways to get a 4 stroke to runaway.

 

first i herd of this too. i mean, i guess it could e common. i remmeber K&N ad a recall on some itnakes b/c the tubes they would be made out of would brek, and some of the material caused the butterfly valve to stay open, causing "run aways"... but the only thing i can think of is to shut off the fuel and/or air....

 

Had an old Cat run backwards on me once, it stalled, hiccuped, and smoke came out the intake as it kept running--backwards! Way Not Cool!

 

wow!!!! thats pretty BA...

hahahaha thats awesome!!!

 

i also had out 3406b run backwards. jake took it to low and hickuped, then same as above, smoke out both air cleaners. shut down quick befor the no oil pressure had any affects. oil pumps dont pump in reverse.


also so far i have seen a vw runaway, 2 stroke detriots and 1 6.9 ford.

the 6.9 is in this vid.

http://www.diesel-central.com/Video/...ll_4-23-05.wmv
the 6.9 is at the 5min 30 second mark. he is the first one to get a full pull even against all the new trucks..... brings a tear to my eye.

 

...hypothetical situation here (ok, not hypothetical).

I have moved my Espar heater from one truck to the other. I didnt have time to drop my tank or splice into the fuel system so I just have a 2L pop bottle filled with diesel. Its mounted under the hood, attached to the battery tray and rad overflow bottle. From the bottle there is a 4 mm line feeding the Espar and the line comes out of the bottle through a rubber grommet (ie, its not completely sealed).

So - the concern is, will the unsealed diesel bottle under the hood release enough combustible fumes to cause a runaway?? (the bottle is fairly close to the intake air filter)...anyone think this should be a concern?

 

no. not unless it falls over and dumps it all into the intake, then it might, but probly wont.

 

well................keeping fuel in a soda bottle isn't the safest thing in the world....................i'd be more worried about the bottle degrading and the fuel spilling all over the engine compartment. as far as fumes causing a runaway goes i think you would have to boil the fuel and inject it right into the intake, i mean a propane injection is simply shooting a gas into the intake, so you'd have to shoot so much atomized diesel in there to hurt it to get the same effect{or we could use diesel instead of propane} - even if you got the fuel into the intake - thats were the fuel is supose to be, if anything you'd get a "choked" type reaction from it because you would be running supper rich........and again you'd have to dump the fuel directly into it

again i'd be more worried about the mess you can make than a runaway