Bad lift pump?

B

BIGTRKMAN

New member
Ok got a problem with my dads 92 cummins. Once in awhile i'll just crank and crank until it starts other times it fires rite up. He askt me what i thought said maybe lift pump (has around 180,000miles) or could b losing prime somehow? Any ideas? Thanks for any help.
 
maybe let it run for a few minutes on pavement..see if it drips. replace the fuel filter? does it start if you blurp the throttle?
 
Jsut replaced the ff a couple months ago. No, my brother tied pumpin the throttle, holdin it down while cranking and still didn't seem to help. haveta look at it later n c what i can find. Thanks for the tips
 
check ff and see if it's full, if not you might change the $60 pump


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You can have an air leak in the system without seeing a drop of fuel. It'll purge just enough air into the system when sitting to make it a b!tch to start. It's possible for this to happen even in the sending unit in the tank. So, for instance, if there's a crack at 1/2 tank level, it'll never give any troubles untill parked overnight at less than 1/2 tank, OR, parked on an incline that exposes the cracked line.
 
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