2002 FORD F350 SUPER DUTY QUAD CAB LE 7.3L DIESEL PARKED IN MY BACK YARD WITH THE ENGINE BLOCK HEATER PLUGGED IN. I HEARD AN EXPLOSION AND LOOKED OUT THE WINDOW. MY TRUCK WAS BURNING FROM UNDER THE HOOD. THE WHOLE FRONT END WAS ON FIRE. THE GRILL, BUMPER RUBBER, HEADLIGHTS AND INTERCOOLER BURNED AWAY. WHEN THE FIRE DEPARTMENT FINALLY PUT IT OUT YOU COULD SEE THAT ALL THE RUBBER, PLASTIC, WIRING AND BATTERIES WERE COMPLETELY BURNED AWAY. *TR