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1999 Jeep Cherokee Sport 4.0L Misfire, cracked plugs
Posted to Chrysler Driveability on 5/31/2012 7 Replies

we are having a problem with this jeep cracking cyl 3 spark plug. NO CARBON, we have done numerous induction cleanings in the past, thinking it was carbon. I'm stumped. The plug appears fine in color, very light brown, and the deep casing on the plug is closer...

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  Related Documents & Media  1999 Jeep Cherokee Sport

 
Message Closed w/Summary

car Vehicle Data

1999 Jeep Cherokee Sport

VIN 1J4FF68S7X
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, Cracked Plugs
OccursOver 10K Miles

Trouble Codes

P0300Multiple Misfire Detected
P0302Cylinder 2 Misfire Detected
P0303Cylinder 3 Misfire Detected
Message Closed w/Summary

car Vehicle Data

1999 Jeep Cherokee Sport

VIN 1J4FF68S7X
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire, Cracked Plugs
OccursOver 10K Miles

Trouble Codes

P0300Multiple Misfire Detected
P0302Cylinder 2 Misfire Detected
P0303Cylinder 3 Misfire Detected