DROVE VEHICLE; PARKED VEHICLE & WENT INSIDE STORE TO DO BUISNESS; SHORT TIME LATER WAS INFORMED VEHICLE WAS ON FIRE; LOOKED & VEHICLE WAS COMPLETELY ENGULFED IN FLAMES; FIRE DEPT. ARRIVED & PUT OUT FLAMES; TOLD OWNER THEY THOUGHT CARBURETOR LEAKED ON MANIFOLD. *AK REFERENCED IN EA02-025