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Discussion Starter · #1 ·
working on an old v-8 cat diesel currently in a grain truck.
not sure what size the motor is. here is the problem. the truck starts easily and runs for a few minutes and then sputters and dies. if i wait a few minutes, it will start right back up and do the same thing. there is a little white/blue haze as soon as it fires and then it goes away. I replaced the fuel filter and pump with no success. any ideas what it could be? :help
 

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it kinda sounds like you might have a resticted fuel line somewhere. try using a bucket of fuel and pull fuel from there just before your filter. good luck
 

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sounds like it could be a junk fuel line into the pump housing
 

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does it die if you rev it at a higher idle for some time?

sounds to me like your sucking and air bubble from somewhere or theres shit in your tank
 

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Discussion Starter · #6 ·
thats what i thought too and i dropped the tank and checked it to be sure and put a new fuel pick up in the tank also. the messed up part is this thing has ran great for years and all of a sudden does this crap. to answer the other question, it does keep running if its sitting still and i rev it up. it only does this after a few minutes of driving. today we checked all the fuel lines (no leaks) and drained the tank (again) with no luck. tomorrow, we start replacing fuel line!
 

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Dont forget about the return side of the fuel system. After it dies, what happens if you try and restart it directly afterwards? Crack a fuel line loose after it dies, then crank to verify that you indeed have a fuel supply problem.
 

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sounds like its a 3208 cat. deff symptoms of sucking air
 
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