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Old 09-17-2009, 12:54 PM   #4
S.J.SLEEPER
 
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Join Date: Jul 2009
Location: barnegat nj
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i am sure you checked for leaks correct? a small leak will cause a pressure drop.
if no leaks then proceed......

pull fuel rail off leaving it still attached to fuel lines. will looking @ the injectors spray nozzles, have someone cyle the key on....... wait for dripping injector..

also.... this was a complete gm pump module correct?(housing,wiring,pump, lines) if not and just changed the pump it self you could have a ruptured feed line from module housing to pump

let me know what happens from there.
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