[TurnerPullingTeam]

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

 

[TurnerPullingTeam]

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!