As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE SWOLLEN RUBBER SEAL CAUSED A FUEL LEAK AT THE GASCOLATOR RESULTING IN AN IN-FLIGHT FIRE. THE AIRPLANE WAS BEING OPERATED IAW AN STC FOR AUTO FUEL. THE SWOLLEN SEAL WAS POSSIBLY CAUSED BY THE AUTO FUEL'S AFFECT TO RUBBER BASED PRODUCTS. OWNER ADMITTED NOT TESTING FUEL FOR ALCOHOL IAW THE STC INSTRUCTIONS. INCIDENT NR IEA092000004.