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Cylinder 4 misfire

  

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I've replace plug and plug wire and coil pack. Still misfiring. What else could it be?

 

02 Dodge Grand Caravan 168000 miles. Code p0304 and minor evap leak.


3 Answers
3

Spark plugs, air filter, fuel filter (168,000 miles)?


1

Clean your MAF sensor with MAF sensor cleaner and clean the throttle plate with throttle body cleaner. Check the the things @Doc says as well. 


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