Quote:
Originally Posted by Thor1993
Well I spoke too soon, I went to drive the truck to work today and after it warmed up it ran horrible again. I will start working my way down the list of more things to check.
It is so odd, we plowed with it for 2 hours straight over the weekend and it never missed a beat. But out in the highway no power, poping and missing....
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I posted this on feb 10, 2014 " the exhaust manifold crack my be the problem. with a crack the KS will retard timing . also the O2 will report a lean condition to the computer. this will be noticeable after the open loop ends and the closed loop begins. "
having seen your crack you wasting time and money chasing ghosts !