ok the ops went out we rig it up with a hot wire it ran for a while like that then i bought an ops and it lost its prime we got it running and it ran good had about 500miles on it and last night it started smoking really bad kinda white and blueish and running like it needed a new fuel filter then all the sudden it lost all low end power would not run until it got to 2000rpms i was limping it home then it it really lost power wouldn't go above 2000rpm sounded like there was sum thing blocking the exhaust i pulled into a buddys house it lost all oil pressure i check the dipstick it was full then it died i changed fuel filter and it ran for thirty seconds then died i came back this morning and it started then died tried again then nothing there was oil coming from the back of pan between motor and trans a good steady drip i opened the t valve to drain the air in the fuel and nothing came out when it was running however when i fixed it back no fuel would come out ether so i dont think that matters its a 92 3500hd 5 speed hope yall have some ideas cause im stumped sum times it will start but you have to keep on the throttle or it dies but not enough power to pull itself

 

PMD?

 

92 doesnt have a pmd.its all mechanical injection.

pull your intake hose off the front of your turbo, and grab the shaft and wiggle front to back, side to side and up and down. my guess is that the internals of your turbo fell apart.
you may need a new turbo

 

ill check that hear in a minunte but what would oil coming out of back of block have anything to do with the turbo being out

 

Sounds like a good excuse to install a cummins in that rig.

 

i forgot you mentioned oil at the back of the block. did you check the ops? maybe its leaking?
if not, possibly the rear main seal

 

i checked turbo the propeller was fine checked ops it wasn't leaking still only runs for a few seconds then dies im at my whits end

 

Take off the fuel filler cap is there a vachuum? if so try running it without fuel cap

 

Sounds like you are getting a lot of crankcase pressure and possibly blew the rear main seal. Pull the oil fill cap off and have someone start it so you can check the blow by.

 

That would be an expensive way to add more to his list of troubles

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Could be dealing with a could of issues here lets start with the no start, possibly you had the oil leak and just now catching you attention. I'm not sure of setup of lift pump your year you have an electric lift pump I think, can you put 12V direct to it to see if it is moving fuel to the IP,connect a vac/press test gauge about $20 at any part store to buy one to the filter mger drain & see what kind of supply pressure you have to the IP.

A truck this old could have a plugged pickup sock in the tank, plug that "sock" up and you starve for fuel.

As for the oil could be a bad 2 piece rear main a likely possibility with a 92 with some miles on it, any excessive oil consumption prior to this incident?

When cranking now any odd noises heard/felt while cranking ?