I WAS PULLING OFF FROM A STOP SIGN AND BEFORE I GOT ACROSS THE INTERSECTION MY CAR MAKE A POP AND THEN THE ENGINE SOUNDED LIKE IT BLEW. I PULLED OVER AND A SPARK PLUG POPPED OUT OF THE HEAD CAUSING A SMALL FIRE THAT MELTED HOSES. ESTIMATED DAMAGE IS A MINIMUM OF 1500 FOR JUST THIS PLUG BUT I WAS TOLD THE OTHERS WOULD FOLLOW SUIT. READING ON THE INTERNET THIS SEEMS TO BE A SERIOUS ISSUE WITH THE FORD 5.4 TRITON MOTORS. IF I WAS NOT ABLE TO STAY CALM AND STEER MY VEHICLE CORRECTLY THIS COULD HAVE RESULTED IN A SERIOUS ACCIDENT. THE VEHICLE LOST POWER AS IF IT HAD STALLED, AND AS I STATED BEFORE THERE WAS A SMALL FIRE WHEN I LIFTED THE HOOD TO SEE WHAT HAD HAPPENED. *TR