Hey everyone, on a recent road trip my C started missing and the check engine light came on. It ran rough the entire time. I've had this happen before so when we finally got it home I changed all plugs but that didn't fix it. I read codes and they popped up 300 and 305. I changed out the coil on #5 but that hasn't fixed it either. There's 130k on the car. I'm looking for solutions but any help here as to a logical next step or solution would be greatly appreciated. Thanks all, Merry Christmas.