alright here we go. to day i ran my truck with open headers for about 2 min.then i hooked my exhaust back up and now it back fires when it runs for about 4mins it will start backfiring real bad would the exhasut leak cause this or not thanks guys
Did you do anything else before or after exhaust went back on? IE timing with exhaust off?
From your second post it sounds like you took the exhaust back off and say its not popping? Is this correct?
And it worked absolutely fine before you took it off?
Put the mark on the balancer at zero on the timing scale. Take the dist cap off. If the rotor is facing the front of the motor...Great. If it faces the firewall, turn the crankshaft one turn until the mark lines up again......rotor will be facing forward...that is where #1 wire goes on when you put the cap back on. Go around clockwise on the cap with the plug wires 18436572