99 Honda CRV 2.0 liter automatic transmission, 232k miles. Check engine light came on, getting the following error codes:
P0300 Random Misfire
P0304 Cylinder 4 Misfire
P0303 Cylinder 3 Misfire
Where should I look for the issue?
There is an excellent sticky on misfires in our FAQ section. Start there first. If there’s any questions, just let us know.
https://carkiller.com/scottykilmer/qa/misfire-4/
Thank you.
Switch the coils of cylinder 3 and 4, to cylinder 1 and 2. If it the misfire moves, get new coils.
If it doesn’t moves, try switching the spark plugs of 3 and 4, to 1 and 2. If the misfire moves, get new spark plugs.
If neither of those solve the problem, someone, that is beyond my capabilities. Good luck!
Thank you.
Let us know how it goes!