I first got code P0307, which is cylinder 7. So to be on the safe side I change all the spark plugs, all the ignition coils, and all filters.
Later on it was good then the same code popped up P0307 and P0302. It was cleared. I just bought one fuel injector. Should I have bought a 2nd since 2 cylinders errors should up???
Then new code popped up P0451. It went away but now the only code that shows on a regular basis is P0300. What is going on??? Do you think it’s the ECU or something else??
I would make sure you used oem coils and plugs.. aftermarket ones never work properly and makes sense you started getting more cylinders misfiring after they were installed ( if aftermarket was used)