Mechanics

MISFIRE ON CYLINDER 2

2003 Pontiac Grand Am

Engine Performance problem
2003 Pontiac Grand Am 6 cyl Two Wheel Drive Automatic 119, 00 miles

I have a 2003 Grand Am w/ a 3.4. It is misfiring on #2. I replaced the coils, plugs, wires, injector & control module. What else could it be?
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Duffman1972
September 12, 2009.



Check the compression on that cylinder, could be a collapsed lifter, bent/broke pushrod.

Mmprince4000
Sep 20, 2009.


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