Marcus Frost

Hey guys.

I've got the car over with Al @ CPT here in Chicago. While he's doing some things and trying to figure out this mysterious misfiring problem, I thought I'd ask here to see if anyone has had the same problem.

Car is in my signature.

We eliminated the obvious 2 first things, plug and coil. Plugs have 200 miles on them, swapped, same cylinder misfiring. Swapped coils, same thing. Ths misfire is only slight but consistent, you can see the count in the diag program detect them. The next thing Al is trying is injectors, going to clean them and then maybe swap them. The one obviously scary test we may have to run if it winds up getting to there is a compression test, but I highly, highly doubt that is the problem.

Anyone else had this happen? It was very random that this started happening. We did plugs but the car drove fine at first, and only started studdering yesterday. I even got a CEL for cylinder #4 misfire, and it's the only one doing it, so it eliminates things like MAF, bad fuel, etc.

Any thoughts/comments/insight is appreciated.

Thanks,

-m

BUFFALONOGAROpebFATS

mine was bad. swapped from cyl 1 (which was the prob) to cyl 2, and cyl 2 was going nuts. swapped the dong piece and it was fixed.



search for my name and misfires and you will see me say the words coilpack dong/dick/rubber dick as the culprit. i think they are 8.xx a piece????????? easy fix. they just pull right off the coil pack........all they are is a insulator for the signal me thinks



good luck

5lugnuts

*Beavis Laugh* He said Rubber Dick!

FixedWing

Although these should affect all cylinders it is still possible that it is just enough, or some combination of factors is just enough, to affect this cylinder.

Stephen

Marcus Frost

Al called me and said with a good quick cleaning of the fuel system with his 3M treatment the misfiring is down to 10% of what it was. I'm going to drive around on it for a bit and that should get rid of it completely... if not, look for another post

Thanks everyone...

-m