Today suddenly my 07 sebring 2.4 began idling very rough. Took it to Autozone and told me it was code p0304. Does anyone have any suggestions on how to fix the problem. Really need this car running asap!

Thank You,

Robert

 

is this an 09 or 07 sebring U have 2 different years posted how many miles do u have on it?

 

Sorry about that, its an '09 sebring. I changed out the spark plugs and no differance. Plugs were gapped at about .53 which seemed wrong. I gapped at .40, searched online and that is what most had posted. What gap do you think I should go with? I think it probably is the coil that went out. p0304 is cyl 4 misfire. I started the engine and one by one removed the electrical plug from each cyl and noticed one coil had no change in the idle of motor. I switched it with another cyl and then the same coil had the same problem. So I guess it would be that coil. What do you think?

 

possible or a valve issue in the engine