1995 Toyota Corolla Q&A

1995 Toyota Corolla Question: Car was running fine and then started running rough

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 -
Answer 1
Any oil on the plug or wire anywhere? -
Comment 1
Nope clean and dry showed good burn golden in color -
Comment 2
Vacuum leak, low compression, defective plug or injector problem. -
Comment 3
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 -
Comment 4
Sure! -
Comment 5
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 -
Related Items: