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Jeep liberty 2008

  

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I have a jeep liberty 2008 limited 4×4 and it has a check engine light on that is not going away the code reads PO305 saying it is miss firing but I have changed both the spark plugs and  Ignition coil for all 6  Cylinders. My first  Mechanic can not seem to find the problem and I do not know what to do


2 Answers
1

Did you look under our Misfire Sticky under FAQ:

https://carkiller.com/scottykilmer/qa/misfire-4/

Also here:

https://www.obd-codes.com/p0305


0

If they’ve already put new coils and plugs it could also be an injector or a mechanical failure like low compression. You would need more diag work to find the issue. 


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