bad missfire

Asked by Mar 22, 2010 at 01:36 PM about the 1996 Pontiac Sunfire 2 Dr GT Coupe

Question type: Maintenance & Repair

i have a 96 sunfire , just swaped motors few months ago from a malibu but ran fine until now,   the miss went away for a while but when u let it idle for long period of time it startted to miss again i have changed the coils, plug boots, injectors, and new plugs, wondering what it might be all the pluggs are dry when i take them out but still misses so if someone has a soulution it would be a great help

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Take a compression test Check for vacuum leaks

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