As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HOT ENGINE START, A CARBURETOR FIRE RESULTED. FIRE EXTINGUISHED USING DRY CHEM. ENGINE WASHED DOWN AND FLOWN. EXCESS OIL CONSUMPTION NOTED (1 GALLON PER HOUR). TEAR DOWN OF ENGINE REVEALED WORN PISTON RINGS AND GUMMED-UP INTAKE VALVES PLUS GRIT IN OIL. SUBMITTER RECOMMENDS TO NOT USE DRY CHEMICAL ON ENGINE FIRES.