[tony4x4nc]

Wow.....thanks for all that helpful info trrop! If your facing the engine my timing is to the left of the mark (advanced). The one thing I meant to do earlier that Ramblin suggested was to disconnect the battery for about half hour to reset the ECM to see if that does the trick. It kind of makes sense now. The Tensioner I got was not factory. I got it off ebay. Could the timing be so advanced that i'm hearing a "Piston Slap" sort of sound becuase the fuel is being ignited way before TDC. Wouldn't that make the truck feel sluggish since the engine is working against itself? I'm gonna unplug the battery on my break and let it stay off until I get off and will repost tonight.