[Vapour Trails]

Originally Posted by Derf00

The guy is an idiot or doesn't want to deal with the questions.

ALL 3 VALVE V-8 FORD MOTORS PRIOR TO A BUILD DATE OF 1-08 HAVE THE SAME ISSUES WITH THE TWO PIECE SPARK PLUGS, I REPEAT...AAAALLLLLL OF THEM. IT DOES NOT MATTER IF IT'S A CAR OR TRUCK. IF IT HAS A 3-V V-8, MOTOR IT HAS CRAPPY PLUGS.

The engine design is the same, but the operating conditions are different. The truck engines are under more load, more often (think pulling). This appears to cause extra carbon build up as the F150s suffer this problem on a greater scale.

I know the local SVT rep @ Ford, his family owns the dealership. When I brought up the spark plug issue, he said that's its never been an issue at his service department (re: Mustangs). The F150s are a different story,