I TURNED THE KEY TO START THE ENGINE AND AS IT STARTED CRANKING SMOKE STARTED COMING OUT OF THE DEFROSTER AND THEN FIRE STARTED COMING OUT THE ENGINE HOOD. LUCKILY I HAD A FIRE EXTINGUISHER HANDY AND OPENED THE HOOD AND PUT OUT THE FIRE. WONDERED WHERE THE FIRE STARTED SO TRIED STARTING AGAIN AND FIRE STARTED IMMEDIATELY AT THE REAR OF THE ENGINE OR ON TOP OF THE BELL HOUSING. I ALSO SMELLED FUEL. THE TRUCK WAS NEXT TO MY GARAGE AND HAD BEEN DRIVEN A FEW DAYS EARLIER. IF I HAD NOT PUT OUT THE FIRE MY WHOLE HOUSE COULD HAVE BURNED DOWN. I DONATED THE TRUCK TO WHEELS 4 VETS.