What is your question?
·
·
What is your question?
Engine consistantly runs rough, code PO304 lights the check engine light, but only code PO304 appears, no codes for ignition coil, fuel injector, catalytic converter, lean fuel mixture, O2 sensor, etc.
3 Replies
you need to get the coil wiring replaced as well as the spark plugs on the cylinders too. And also the air filter will need to be replaced as well. Have them do a diagnostic on the Check Engine light to see if that is the problem. More than likely it is the problem. It will cost you close to $800 to get this problem fixed. If you take it to a cheaper mechanic, then you will pay around $400 or less.
P0304 means the system has detected a missfire with cylinder #4. Could be a ignition, fuel, or mechanical problem.
COULD BETHE COIL ARE ANY OF THE ABOVE MENTIONED
Thanks all. It was the spark plug. The insulator had a hairline crack, and there was evidence of tracking, which was causing the misfire. Only 19,000 miles on the car. So much for Japanese NGK spark plugs! I put in Autolites.
Could it be the coil even though no trouble code for the coil is registering? Also I should mention that the car only has 19,000 miles on it.
YES ANYTHING IS POSSIBLE ON A CAR