2002 Jeep Liberty misfire engine

2002 JEEP LIBERTY
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KC6ZIS
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Engine Performance problem
2002 Jeep Liberty 6 cyl Four Wheel Drive Automatic 97.000 miles

How to fix or repair a misfire engine? and how much this cost?
Sep 26, 2010 at 9:55 AM
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RASMATAZ
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Engine running rough or misfiring can be cause by the following:

1.Defective spark plug
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Idle air control valve.
Sep 26, 2010 at 10:00 AM
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