2004 F150 4.6LTR ENGINE. SPARK PLUG BLOW OUT #3 CYLINDER 64865 MILES. ORIGINAL FACTORY PARTS. SPOKE DIRECTLY TO FORD MOTORS THEY ACT AS IF THIS IS MY FAULT. THE PARTS HAVE NEVER BEEN CHANGED. FORD TOLD ME IT IS NOT COVERED UNDER WARRENTY BECAUSE THIS IS A MAINTANENCE PART. THE DEALER TOLD ME THAT THIS HAS BEEN A BIG PROBLEM FOR FORD. BUT THEY WONT HONOR TO FIX THE PROBLEM EVEN THOUGH IT IS A MECHANICAL FAILURE DUE TO BAD DESIGN. IT COST 600.00 TO FIX AND I BELEIVE THIS SHOULD BE COVERED BY FORD DUE TO THE NUMBER OF INSTENCES. THERE WERE TWO TRUCKS FIXED THE SAME DAY FOR THE SAME PROBLEM AND AGAIN THE SERVICE DEPARTMENT SAID THIS HAS BEEN A BIG ISSUE. I WOULD LIKE THIS TO BE RESOLVED. THE CONSUMER SHOULD NOT HAVE TO WORRIE ABOUT A SPARK PLUG BLOWING OUT WHILE DRIVING. THIS IS A SAFTEY ISSUE BECAUSE FUEL KEEPS FLOWING INTO THE CYLINDER AND WHEN IGNIGHTS FLAMES FLY OUT THROUGH THE SPARK PLUG HOLE. QUIT ACTING LIKE TH IS IS NOT A PROBLEM AND RECALL THESE POOR DESINGED PARTS BEFORE SOMEONE DOES GET HURT. *TR