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In a previous thread, I asked about the differences between the various aftermarket replacement coil packs available.
To recap, the iCarSoft reported a misfire on cylinder #1. I ended up buying new, aftermarket performance coil packs (looks like the same mfg as the smart madness ones) and plugs.
Because it was easier to access the bolts on the #3 and #2 cylinders than #1, I started at #3. The #3 plug looked good. The #2 plug looked good. The #1 plug was missing the ground tab (the hook on the end of a spark plug) and the tip of the electrode. I haven't tested to confirm, but I suspect that the (original) coil pack helped the plug meet it end.
I installed the new plugs and coil packs and crossed my fingers that all of the debris that had been attached to the spark plug blew out with the exhaust. A couple hundred miles have been put on the car since then and it has been working fine.
To recap, the iCarSoft reported a misfire on cylinder #1. I ended up buying new, aftermarket performance coil packs (looks like the same mfg as the smart madness ones) and plugs.
Because it was easier to access the bolts on the #3 and #2 cylinders than #1, I started at #3. The #3 plug looked good. The #2 plug looked good. The #1 plug was missing the ground tab (the hook on the end of a spark plug) and the tip of the electrode. I haven't tested to confirm, but I suspect that the (original) coil pack helped the plug meet it end.
I installed the new plugs and coil packs and crossed my fingers that all of the debris that had been attached to the spark plug blew out with the exhaust. A couple hundred miles have been put on the car since then and it has been working fine.