05 liberty sport 3.7 with 174,000. Had been running great. Drove last Thursday when it got down to single digit temps here. On Saturday I went to start it and it is running extremely rough and after running for 4-5 minutes it begins to have a loud knock sound like something is hitting the top of the motor. Ran codes. Says it’s misfiring is cylinder 6 which is back passenger side but sound seems to be coming from front drivers side.??? Any suggestions???
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