2010 Jeep Patriot P0301 Misfire Cylinder 1

[@rodolforios1057]

I just changed the spark plugs and ignition coils on this Jeep Patriot with the same trouble code. The valve cover seal was leaking in cylinder 3 and 4. Time for a new valve cover

[@AshokKumar-fm8dt]

How much L/100km do you get after replacing with a new spark plugs?

[@AshokKumar-fm8dt]

How much L/100km do you get?

[@SamuelRobinson-p4y]

I changed all 4 plugs and coils with a p0304 code and I'm still getting the code

[@randomtallguyvlogs6756]

@@SamuelRobinson-p4y the next common thing you want to check is the coils

[@SamuelRobinson-p4y]

@randomtallguyvlogs6756 I replaced the coils and plugs and now the fuel injectors...problem still.persists

[@SamuelRobinson-p4y]

@randomtallguyvlogs6756 car has minimal performance difference...don't feel a shudder or anything while driving that would indicate a misfire. This is odd. I checked the fuel injectors and confirmed they're all misting fine and in proper sequence. No dirt or moisture around the manifold gaskets either...very odd...I'm hoping it isn't the pcm

[@Tearforsun]

How to turn off the lights engine after change the misfires

[@happyhusker1163]

With a code reader or take it to a parts store and they can.