Originally Posted by gomer

I've been doing the tuning on the truck. While we were at the track sunday I logged a bunch of data on it and it is seeing all the knock retard when he's sitting still at idle, it just comes and goes.. then it will clear up about 80% while he cruises around, then comes back at WOT. The truck is running pretty rich and I don't have the timing too high, so I'm sure all of it (for the most part) is false knock. I'm going to investigate his warped power steering pulley and a few other things and see if that clears it up.