EVOthis Posted December 1, 2007 Share Posted December 1, 2007 Hey guys.....I have a 1996 Legacy Sedan EJ22 and was wondering if it is at all possible for a clogged PCV valve to cause a misfire.....it doesnt seem like it would at all but i thought i would just check anyway..... Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted December 2, 2007 Share Posted December 2, 2007 mm...I don't think so but I could be wrong. Common causes of soob misfire on that era are (a) non NGK spark plugs, ( non OEM spark plug wires or old spark plug wires, © carbon buildup or other cause of valves not closing complety. Quote Link to comment Share on other sites More sharing options...
EVOthis Posted December 2, 2007 Author Share Posted December 2, 2007 yeah im kind of trying to milk this whole misfire thing before i go digging into internals.......thanks for your knowledge porcupine Quote Link to comment Share on other sites More sharing options...
WoodsWagon Posted December 2, 2007 Share Posted December 2, 2007 What kind of misfire? Like at idle, under load, all the time? One cyl dead, random missfires? Quote Link to comment Share on other sites More sharing options...
EVOthis Posted December 2, 2007 Author Share Posted December 2, 2007 a misfire in cyl #2 just at idle..... Quote Link to comment Share on other sites More sharing options...
gbrand Posted December 2, 2007 Share Posted December 2, 2007 I would vote for plugs and wires to check first...and if you are concerned about PCV go a head and change it-if you havent changed on car then it may need to bechanged anyay. Not meaning to sound like a heathen, I use autolite plugs, parts store wires(insist on the lifetime guarenty ones), Stant thermostats, etc on my subies, no problems. Also check for cracked vac lines and leaks in accessories-they can cause you to chase many other things. Quote Link to comment Share on other sites More sharing options...
EVOthis Posted December 2, 2007 Author Share Posted December 2, 2007 thanks gbrand....i will take all the info i can get..... Quote Link to comment Share on other sites More sharing options...
EVOthis Posted December 2, 2007 Author Share Posted December 2, 2007 Is it possible that if the injector connectors were swapped say from cyl. 2 to cyl. 4 that i would only have a missfire in cyl. 2? Quote Link to comment Share on other sites More sharing options...
Towel Rail Posted December 2, 2007 Share Posted December 2, 2007 Does the car burn oil? If the PCV valve is malfunctioning, and the car is burning oil, that could cause a plug to foul and misfire. Quote Link to comment Share on other sites More sharing options...
EVOthis Posted December 2, 2007 Author Share Posted December 2, 2007 no i have a ton of oil leaks but thats just a subaru for you....no its not burning oil....i noticed that the cyl 2 and cyl 4 Fuel Injector plugs were swapped...i swapped them back and now it seems as though everything is fine....i let it idle for about 30 minutes and no codes and i didnt hear the miss at all.....all good for now! Quote Link to comment Share on other sites More sharing options...
OB99W Posted December 3, 2007 Share Posted December 3, 2007 [...]i noticed that the cyl 2 and cyl 4 Fuel Injector plugs were swapped...i swapped them back and now it seems as though everything is fine....i let it idle for about 30 minutes and no codes and i didnt hear the miss at all.....all good for now! How did you identify which connector was which so that you knew they were swapped? Quote Link to comment Share on other sites More sharing options...
EVOthis Posted December 4, 2007 Author Share Posted December 4, 2007 Well i have been reading some posts on here about how the white connectors are for the front 2 cylinders and the black/gray connectors are for the rear two cylinders....also i was browsing over a wiring diagram and just shot a look at the wire colors......im so thankful that it wasnt an internal engine problem....the car does have 185,000 miles on it.... Quote Link to comment Share on other sites More sharing options...
Setright Posted December 4, 2007 Share Posted December 4, 2007 I would say you've got a 70% chance of internal breakages in the plug wires - especially if they are the original wires. It's a good place to start. You could try just purchasing the wire for #2 - to avoid spending too much money. Quote Link to comment Share on other sites More sharing options...
cookie Posted December 4, 2007 Share Posted December 4, 2007 I have avoided this on by the fact that I can be somewaht anal and label thing I take apart. I can just see myself doing this and going nuts as Nipper trying to find the reason. for it. Quote Link to comment Share on other sites More sharing options...
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