months ago I got a Cyl 3 mis-fire and knock sensor 2 low voltage. had white "smoke/steam" from the exhaust and loss of fluid. I removed the heads and had them resurfaced and tested. I noticed that the head gasket was the new sort, but replaced it anyway. Cleaned everything on the way in and put it back together. Ran well for two weeks then same codes reappeared. After some trouble shooting, Mike suggested do the heads again. While breaking it back down I notice that I had somehow bent the valley gasket near the third cylinder...so, resealed gasket and lower intake, rebuilt the injectors this time (had some retaining rings break in the removal) so I figured I'd replace the filters, rings and retainers. Oh yeah, should mention in the process of taking it apart this time I knocked a hole in the radiator and had to replace it also.

Now, all that said and done. Started up great, drove well for two days and now I'm right back to where I started with Cyl 3 mis-fire and Knock Sensor 2 low voltage.

Anyone want to trade a weekend of golf for fixing my baby? I would love to do the work myself, but obviously I'm missing something.

Any thoughts?

 

what does the spark plug look like compared to the others? Can you do a compression test? Are the ignition wires good? How about the coils? could the wiring harness be damaged?

 

compression test checked out, ignition coil pack is new (within months), same with the wires (Kingsford 8mm), bosch plugs, plug looks fine...swapped 1 and 3 and still had cyl 3 mis-fire...wiring harness?

 

I was just asking about the harness because of the knock sensor low voltage. I've never seen that one, and I don't think I remember ever reading about it either... maybe someone with more experience will speak up.