What was found
(CAN)ENGINE WAS RUNNING ROUGH ON TAKEOFF. POST FLIGHT INSPECTION FOUND #1 CYLINDER SEPARATED AT THE BARREL/HEAD AT THE LAST THREAD. THE CYLINDER DOME AND EXHAUST PORT WERE OIL FOULED. THERE WAS A BAD FUEL LEAK AT THE INTAKE PORT. THE VALVES, VALVE GUIDES AND SEATS WERE IN GOOD CONDITION AND THERE WAS NO EVIDENCE OF ANY OIL LEAKS AT THE BARREL/HEAD. THIS ENGINE HAS BEEN OPERATING WITH AUTOMOTIVE GASOLINE.