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94 6.5 starts warms then dies

B

Brownie

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idaho
I have a 94 gmc td changed ops and fuel pump starts idle for a c ouple minutes and dies if your sitting in cab oil pressure on guage slowly drops no smoke or anything out tail pipe dtc 91 93 95 97 98 have reset and still get dtc codes service throttle soon light id also on put used app on and light came back on any ideas
 
Check the grounds esp. by the trans dipstick.
 
I have a 94 gmc td changed ops and fuel pump starts idle for a c ouple minutes and dies if your sitting in cab oil pressure on guage slowly drops no smoke or anything out tail pipe dtc 91 93 95 97 98 have reset and still get dtc codes service throttle soon light id also on put used app on and light came back on any ideas
 
those are all cyl balance codes. sounds like your still not getting adequate fuel. with it running open the t valve and see if you get a good amount of fuel coming out. also put a clear hose on the return line coming out of the IP and check for air in the system.
 
Well boys looks like its time to buy injection pump shes puttin diesel in the cranke case open the injectors and its barley spittin plenty of pressure from lift pump does any one know company that rebuilds these or where I can find one decent price got tight budget so I figure I would ask
 
You should have a lot of diesel in the engine valley as there is a hole between the IP diesel shaft seal and the engine oil shat seal.

It isn't the IP that is putting diesel in the crankcase.
 
Was told the seal goes out and leaks into crank case not much prsssure out of injection pump
 
Could be worn injector/s filling up the cyl and washing into CC, how many miles on the current set, also any smoke out the tail pipe while idling if so what color ?

A lot of smoke while starting ?
 
Typical life of injectors is 100K so you are due for a fresh set, IP seal fail is not a common fail mode could happen I guess but not common, I'm inclined to suspect injectors,

One of the other guys will chime in later as well
 
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