Question about 1989 Pontiac Firebird

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1985 firebird 305 tpi wont pass smog. changed maf,ox sens,catalytic conv,fuel pump,adjusted valves, need to know how to do

Gas tank is spewing gas out when test is being done. idle is too high 950 to 1050. i changed plugs, cap, rotor, wires replaced steering column, removed spark control module and it ran the same without it. is reg in tank bad or is my engine the problem. how do i accurately adjust the valves and which is int., and which are exh on my 1985 pontiac firebird 305 tpi and firing order and location of each cyclinder?

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  • Master
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Sounds like bd fuel pressure regulator. it is supose to idle aound1,000

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

Zim1308
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SOURCE: I have a 1992 Pontiac

do a vacuum test on the FPR if it IS holding vacuum, then i would try to test the fuel pump.

Posted on Apr 18, 2011

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