Legacywagon Posted January 9, 2015 Share Posted January 9, 2015 (edited) Car: 2000 Subaru legacy l wagon thought I fix the intermittent rough idle and misfire by replacing pvc valve ($3) last month. It keep doing it. It's been intermittent misfire for 3 months and not driving it for 3 months, but I start it once a while. I change passenger and driver side valve cover gasket with the felpro kit. It was easy and took me under 2 hours. Little bit of oil went inside all 4 spark plugs well so I cleaned them up with brake cleaner and let it sit overnight. Next day, I use a rag to clean the inside. Today, I change 4 spark plugs (pre-gap at .035) so I gapped all of them to .041. after I install it, I drove the car around and no misfire for 4 miles. Came back from Giant food store and My car turn off at a traffic light idling. I restart it and misfiring with 2 codes (SOOO HAPPY. There was no code before this with the rough idle and misfire). The problem: -I scan it at home and says cylinder 1 and 2 misfire. While the car misfire, I unplug cylinder 2 top spark plug wire connection that connect to the coil pack and no spark. I did this same procedure with the cylinder 1 wire and gave me the same result. When the car stop misfiring, I unplug the cylinder 2 spark plug wire that connect to the ignition coil and there was spark, but seems weak comparing to cylinder 3 and 4. While the spark plugs wire NOT connected, the ignition coil gives no spark again. so is this ignition coil? I did ask two autozone and they said it is ignition coil. Also, I went to a 5 star auto mechanic shop from 20+ reviews near my area and they said the ignition coil is the problem. What you think? HERE IS THE VIDEO (please excuse my happiness. Been figuring out this misfire): https://www.youtube.com/watch?v=vh8fUuOxAVU Edited January 9, 2015 by Legacywagon Link to comment Share on other sites More sharing options...
mikaleda Posted January 9, 2015 Share Posted January 9, 2015 Ignition coil You can pick one up at the junk yard for like $20 Really easy to swap out, four bolts a connector and the plug wires 1 Link to comment Share on other sites More sharing options...
Legacywagon Posted January 9, 2015 Author Share Posted January 9, 2015 oh okay. Deleted that video and posted a new video. This is the new video: https://www.youtube.com/watch?v=rxVtXBR4VW4 Link to comment Share on other sites More sharing options...
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