Misfiring can be cause by the following:
1. Defective spark plug.
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. Vacuum leak
5. Fautly fuel injectors.
6. Insufficient fuel pressure.
7. Mass air flow sensor.
8. Throttle position sensor.
9. Idle air control valve.
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Thursday, November 25th, 2010 AT 9:53 PM