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2009 Infiniti G37X misfiring

  

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I have a 2009 Infiniti G37X got a code miss fire on Cylinder 3 so i replaced all Coil packs reset code and 5 minutes later code comes back miss fire on Cylinder 3?? Any suggestions would be greatly appreciated?


Can you please list all the codes here (if there are any additional ones too)?


PO303


3 Answers
2

How many miles do you have on it? Have you replaced the spark plugs as well?


150,000 Thanks


2

You could be getting a misfire code on #3 also if the injector is not functioning properly.


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See here for the whole list of possible culprits - 

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


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