oil/fuel filter change problem
#1
oil/fuel filter change problem
truck was running perfect until i did a fuel and oil filter change and now it seems to b starving of fuel maybe. Im only building about 35-38psi of boost whe i was at 45psi. the truck pulsates when i get on it in 4th and 5th gear. any solutions?
#6
Administrator
What year truck?
Where is your fuel pressure guage mounted?
I'm going to guess you have a dying lift pump.
When you changed the filter you broke prime, and now the injection pump is having a hard time pulling it's own fuel all the way from the tank.
Assuming this is a 24 valve 2nd gen truck we are speaking of.
phox
Where is your fuel pressure guage mounted?
I'm going to guess you have a dying lift pump.
When you changed the filter you broke prime, and now the injection pump is having a hard time pulling it's own fuel all the way from the tank.
Assuming this is a 24 valve 2nd gen truck we are speaking of.
phox
#7
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I too am thinking air in the lines...BUT it should have perged by now...however if not you may have damaged the cylinders from running them dry...usually
"AT AN IDLE" you make sure all cyls have fuel b4 you go down the road
TRY to crack the connections @ the injecters@ an IDLE
if no fuel PURGE IT
if there is fuel ...
and it is still running poorly with fuel maybe a bad injecter
or you did damage it running DRY Cyls
GOOD LUCK, Flip
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#8
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Are you talking about some cylinders in the injection pump?
#9
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I was thinking along the lines where if you have a bad lift pump and the seal at the FF was not good, the VP would draw a vacuum. The only reason I even thought that was because of the recent FF change...I sort of assumed tat the LP was dead.
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