SPARK PLUG FOR # 3 CYLINDER BLEW OUT, DAMAGING HEAD THREADS AND IGNITION COIL. THIS SPARK PLUG WAS ORIGINAL FROM THE FORD FACTORY, NOT A REPLACEMENT. DEALER IN MY AREA QUOTED $800 TO INSTALL A HELI COIL AND NEW IGNITION COIL; BUT ADVISED THAT NEW HEADS SHOULD BE CONSIDERED AS THE OTHER 7 CYLINDERS COULD ALSO BE SUBJECT TO THE …
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SPARK PLUG FOR # 3 CYLINDER BLEW OUT, DAMAGING HEAD THREADS AND IGNITION COIL. THIS SPARK PLUG WAS ORIGINAL FROM THE FORD FACTORY, NOT A REPLACEMENT. DEALER IN MY AREA QUOTED $800 TO INSTALL A HELI COIL AND NEW IGNITION COIL; BUT ADVISED THAT NEW HEADS SHOULD BE CONSIDERED AS THE OTHER 7 CYLINDERS COULD ALSO BE SUBJECT TO THE SAME FAILURE. DEALER ALSO INDICATED THIS WAS AN APPARENT DESIGN FLAW BY FORD, WHICH IS NOT CURRENTLY BEING ADDRESSED. NEW CYLINDER HEADS AT THE DEALER WERE QUOTED OUT AT $5,000 INSTALLED. HAD THIS FAILURE OCCURRED WHILE DRIVING, A FIRE MAY HAVE BEEN CAUSED BY FUEL BEING PUMPED OUT OF THE #3 CYLINDER AND COLLECTING ON THE EXHAUST MANIFOLD. *TR
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