P0304 Fault in 2005 Dodge Neon SXT - Misfire Diagnosis and Solutions
My 2005 Dodge Neon SXT is displaying a P0304 cylinder 4 misfire code. I've already replaced the spark plugs, ignition wires, and the ignition coil. The engine idles roughly, and when I come to a long stop at a traffic light, the check engine light begins blinking. It stops blinking during acceleration but remains illuminated. What are the next steps or potential causes to diagnose this issue?
After replacing spark plugs, wires, and the ignition coil, the only remaining possibilities are insufficient cylinder compression or a faulty fuel injector in cylinder 4.