Hi guys, I am having a issue with my 03' Terminator. On Friday evening my car started to miss and stumble a little bit. It was noticeably rough but not real bad like it would with a complete missfire. It was brief and then started to run smooth again after about a minute. Ever since then I have had it go from running smooth to slightly rough then back to smooth. Then yesterday while I was sitting still idling it started to stumble and almost stalled altogether. I got it home and pulled all the plugs and they all looked good. I did have an issue with the timesert insert that I had installed in #6. It was never seated properly and I was getting a litttle blowby that was lifting the coil a tad out of the hole. I removed the bad insert and put a fresh one in that locked in nicely. Thought I had nailed the problem. Fire it up (running great) and run to Circle K and it starts missing again on my way home. While it's missing it continues all throughout the RPM range. It can be sitting idling on the driveway just fine then stumble and die out of the blue. All the while it will never throw a CEL. When it runs smooth it is fast as hell. The misfire seems to vary in intensity from just barely noticeable to completly WTF? It usually starts off as a slight miss and gets progressively worse and stays bad for a bit. Then it slowly goes back to normal. It doesn't appear to be a on andf off problem. Anybody have any idea's?
