Question about 2000 Pontiac Grand Am GT

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1999 Grand Am 3400 V6 misfire. Replaced plugs wires injectorscoils Pull heads to check valves good compression misfire at idle and goes away above 2000 rpm any help or ideas appreciated

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Check the egr system,

Posted on May 10, 2010

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1999 Grand Am 3400 V6 misfire. replaced plugs, wires, injectors,coils Pull heads to check valves, good compression misfire at idle and goes away above 2000 rpm any help or ideas appreciated


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If white smoke is coming out of your tail pipe is is burning antifreeze. However have it checked closely. While it could be a head gasket, the 3400 is noted for the intake gasket leaking. Have a pressure test done before you pay for something that you don't need.

Also there is a way to permanently repair the head gasket if it is a real leak as long as it still runs. Check out Barr's Leak head gasket repair and follow the directions to the letter. do not skip any thing. It works I have repair a dozen cars with this.

Hope this helps

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