myribitsbroke

FairTax- it has spark plug wires. i found a video that advised turning the wires almost 180 degrees before removing in order to keep the metal contact in tact so i did that. how are you sure that the valve cover grommet is leaking?

put new spark plugs in today. the old ones didn't look that bad although the passenger side rear plug (sry, i'm new to subarus, don't know which cylinder that is) had a little bit of oil on it. the gap didn't look noticeably out of spec. once installed i started the car again and it still runs like garbage.

the engine has about 128k bought it in august with 115k not sure if/when last time plugs were changed but will start there.

2007 Forester 4-cyl manual NA CEL and flashing cruise came on, figured it was because it was overdue for an oil change. Off and on, but most of the time on. Went off when changed the oil but came back a day or two later. Suddenly begins to run very rough and CEL begins to flash on way home. Codes: p0420 (cat efficiency low) P0301 (cyl 1 misfire) P0302 (cyl 2 misfire) and the MIL readings: Misfire Fuel Comp Cat Evap O2 Sensor O2 HTR EGR quite a list. where to start? are some of these codes being thrown on account of the more serious codes (ie misfire causing o2 sensor reading to be funky, etc)