1996 Pontiac Grand Am

Possible cause of misfire

1. Fuel filter clogged and/or impurities in fuel system
Replace fuel filter or clean system.
2. Faulty or incorrect gapped spark plugs
3. Ignition system wires disconnected or damaged ignition system components
4. Defective spark plug wires
5. Emmision or engine control system componets faulty
6. Low or uneven cylinder compression pressures.
7. Ignition coils faulty or weak
8. Ignition system faulty or weak
9. Vacuum leaks at intake manifold or plenum or vacuum hose's
10. Fuel injector dirty or clogged
11. Inproper fuel pressure

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