Okay, I mis-shifted couple of weeks ago. From 3rd @ 8k to 2nd. Soon afterwards I was shifting normally and the car died. It had problems idling. It did this until I tore it all apart tonight. At one point I was getting codes for misfire in all four cylinders. I did a compression check and got 180 180 180 120. I reset the ecu and hooked a obd-2 scanner and it only saw cylinder four misfire. There was no apparent power loss. I just yanked the head and suprise.....no apparent bent valves. However, there is major fouling of cylinder four. The intake camshaft was also jumped a few teeth. Everything else looks great. So.....mechanically wiz people....or just someone that has a good idea.....what the hell is going on? Could the intake jumping teeth cause problems in only one cylinder?? I'm still taking the head to a machine shop but I still would like ideas.
It may not be apparent, but I'd still b willing to bet there was valve damage on #4. I don't think poor intake cam timing would cause just 1 cylinder to go bad.
You shold have done a leakdown before you just starting yanking everything off. That would have given you a MUCH better idea of what was going on.
You could have possibly lost a ringland on #4 as well. But now it will be much more difficult to rule that out without a decent amount of work.
hmm..same thing happened to me, but i just assumed i had a some bent valves, im about to take off my head tomorrow, but what can i do to make sure its a bent valve...i see that i should do a leak down test, where can i get one, and how does it work?
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That would have given you a MUCH better idea of what was going on.
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