[wafrederick]

The 302 is the same way on the #8 cylinder with crossing the plugwire.It will eat up the piston.Another thing to check is the IAC motor which is also a common problem on Fords.Unbolt it with it plugged in and have someone turn the key on and off without the engine running.It should move with the key on and go back when the key is off.Try cleaning it first and replace it if this does not work.