Thank for the help so far but I think I need to move this to engine problems but I do not know how.
All of the plugs have spark.However #6 plug is stone cold and clean like it has never seen fuel after running in the driveway. The other 5 where hot and looked used. When I pull the wires one at a time while the truck is running (roughly) plug #'s 1,2,3 cause it to run worse. plug #'s 4,5 & 6 do not seen to affect to running at all. The truck knock bad under load and has serious lack of power. Maybe little to no fuel to the back 3 cylinders, getting none to #6 ??

Last edited by chevymgb; 07/25/2009 1:56 AM.