uniberp Posted March 14, 2016 Share Posted March 14, 2016 This is the second time it's happened. Bucking, backfiring, eventually going smooth as it gets warm. Code P0301. Some thread mentioned something about O2 sensor. It's quite humid here, lots of wild temp swings with rain off and on. Parked outside. 2008 Forester auto 99k miles. Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted March 14, 2016 Share Posted March 14, 2016 this can be spark plug wires. try using a plant mister at night - spray the wires and look for arcing. anyway - 17 year old plug wires if original, get a set of OEM or NGK (?) wires - most generic wires don't seem to work on soobs. 1 Quote Link to comment Share on other sites More sharing options...
dada0312 Posted March 15, 2016 Share Posted March 15, 2016 It is unfortunate, I am a novice！ —————————————————————— RS Gold|RS 07 Gold Quote Link to comment Share on other sites More sharing options...
mikaleda Posted March 15, 2016 Share Posted March 15, 2016 I have had good luck with Napa's lifetime wires. If its acting up in really wet weather I would check your plug wires first. Misting water over them will make them arc if they are bad. Like 1luckyTexan said a plant mister or spray bottle with a mist option should work. Quote Link to comment Share on other sites More sharing options...
unibrook Posted March 15, 2016 Share Posted March 15, 2016 Mist the coil and wires at night with the engine running. Quote Link to comment Share on other sites More sharing options...
somick Posted March 15, 2016 Share Posted March 15, 2016 On my 2010 Forester manual recommends changing spark plugs every 30,000 miles. With your 99000 when was the last time the plugs were changed? Sam Quote Link to comment Share on other sites More sharing options...
uniberp Posted April 13, 2016 Author Share Posted April 13, 2016 (edited) On my 2010 Forester manual recommends changing spark plugs every 30,000 miles. With your 99000 when was the last time the plugs were changed? Sam "Oops" should about cover it. My 97 S10 4.3 was my first new car, and the spec on plugs for that Chevy was 90k miles. I guess I thought that changing plugs was as old-timey as zurks. I've replaced more engines than plugs on subarus, none, thankfully, due to old plugs. So this is what original plugs look like at 100k. #1 is on the left. Idk what the others are. And the new driveshaft for the S10 has zurks. Oh well, we'll all have self-driving cars soon. Edited April 13, 2016 by uniberp Quote Link to comment Share on other sites More sharing options...
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