Question about 1989 Pontiac Firebird

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Excessive cranking before engine starts

Complete fuel system is no more than a year old literally from the injectors to the filler neck is replaced all to specs. which leads me to believe it can only be an ignition problem. the car breaks up badly during acceleration on top of hard starts. not sure if its directly related.

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  • dabunker1 Apr 29, 2010

    i stand corrected i'm glad you mentioned the pressure regulator because that is the one piece that wasnt replaced. hah sorry. the hard starts are at all temp. regardless off outside air temp. or engine temp. while it gets a little better if the car is warmed up its still not right. ive had this car for 9 years and used to fire up instantly. i do love the car i have like 12k in it. VERY tempermental though.

  • Anonymous Mar 29, 2014

    dumps fuel out of filler neck when fueling up

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Lets find out if you have any vacuum leaks. Its the right age for them to surface. Do a cylinder leakage test with compressed air. Lets take it from there .
HOWEVER, if you strongly feel its ignition related take it to a shop that does scopemeter testing. This is the quickest and most accurate way to get to the bottom of an ignition issue.

Hard starting Does this happen at all temperatures?
Normally I would say there is no residual fuel pressure. In your case the pump was replaced.
the only other fuel related item would be the pressure regulator may be stuck open not building pressure.
Keep me posted Firebirds are great cars to have and work on.

Posted on Apr 28, 2010

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