Quote Originally Posted by tim_bo16
but no the bottom end of the engine was fine and i didnt change anything..
Quote Originally Posted by tim_bo16
the gas is 91 pump... just filled it on wednesday.... and the truck probably has about 6000 miles on it .. so i wouldnt be the rings would it???
Ok....so I am a little confused I guess. I got the impression that the bottom end wasn't touched....so now I have to ask, was the bottom end rebuilt about 6,000 miles ago and the heads/cam/ignition etc. are brand new and this problem started once you fired it up? Or is it that the heads/cam/ignition etc. all have about 6,000 miles and the motor ran fine at first but it is now running rough?