Question about 1991 Pontiac Firebird
Have you done a vacuum leak test?Around the injector seals is a place to start Do you have a manifold vacuum gauge and if so what is the reading that your getting?another thing to check would be the idle bypass and pcv are clear/unblocked and operating correctly.Does this happen wether engine hot or cold?or both
Posted on Oct 14, 2008
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Posted on Jan 02, 2017
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