my truck has bad valve seals and new head gasket set but blows a little smoke at about 3000 RPM,s. it has been running fine and all of a sudden after i replaced the spark plugs, wires, cap, rotor, pcv valve, and recharged the k&n air filter it chuggs at cruzing speed and runs fine when idleing or accelerating. i rechecked the plugs and wires and cap and rotor after getting a code for random/ multiple misfire and #2 and 7 misfire. i checked the catilitic converter and ohmed the coil and cant find anything wrong. i was told the valve seals or possibly trying to jump time. just wanted your oppinion on what to try. getting tired of working on this thing
May 10, 2010 at 6:32 PM