Has 200k on it auto trans,all oem parts,just had it smogged 2weeks ago,it was running great,and then all of a sudden,running rough in gear and neutral,I pulled the #1 plug wire,got good spark,little change in engine pulled #2#3#4 and engine changed dramatically,checked plug itself looked good
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1995 Toyota Corolla Question: Car was running fine and then started running rough
Answer #1pushrod January 03, 2014, 13:06Master
Any oil on the plug or wire anywhere?
Replyedwag, January 03, 2014, 14:26Rookie
Nope clean and dry showed good burn golden in color
Replypushrod, January 03, 2014, 14:30Master
Vacuum leak, low compression, defective plug or injector problem.
Replyedwag, January 03, 2014, 14:50Rookie
I'm gonna try and check the plug,then timing,then compression,hope its not that though,maybe get lucky with vacuum leak I'll let you know what I find thsnks
Replypushrod, January 03, 2014, 14:53Master
Replyedwag, January 04, 2014, 11:34Rookie
Ok, timings good,plugs and wires seem ok, compression is good on all cylinders all around 160.put everything back together,seemed to run fine,after a few trips up and down the road,it started doing it again, my alternator is squealing a little, do you think that this could cause a misfire? When it cools off I'll try and disconnect the negative cable on the battery to see if it dies