IF YOU HAVE A MISFIRE CODE ,PLEASE READ THIS!!!
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This is a discussion on misfire cylinders 1,2, and 4. within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; (02 WRX) I have a misfire problem with 1,2,and 4. i checked my coils, plugs, connectors, cam sensor, MAF sensor, ...
(02 WRX) I have a misfire problem with 1,2,and 4. i checked my coils, plugs, connectors, cam sensor, MAF sensor, and my vacuum lines. cant figure out the problem, I NEED IDEAS.
compression test, cylinder leak down, prepare yourself.
++ + ++P3LLA++ + ++
06 STi ( Stage II ) BOOSTED
HAWK-EYE ALLIANCE # 808
It was exhaust valve clearance on mine. Mainly cyls 1,2, and 3 though. On mine cyl 4 was the closest to being in spec. After adjusting I haven't had a single misfire since. I have 130,000 miles.