What was found
AIRCRAFT OWNER, PILOT, COMPLAINED OF PROGRESSIVELY WORSENING BAD IDLE, ABNORMALLY HIGH MANIFOLD PRESSURE AT REDUCED POWER SETTINGS AND AFTERFIRING ON THROTTLE REDUCTION AND HIGH EGT READY ON NR 3 CYLINDER. AFTER CHECKING COMPRESSION AND FUEL NOZZLES, THE COWL WAS REMOVED, NR 3 AND NR 1 INTAKE SEALS WERE FOUND PARTIALLY INGESTED. NO PIECES HAD SEPARATED AND WENT INTO THE MANIFOLD. THE SEALS AND GASKETS ON THE FLANGES WERE REPLACED AND THE ENGINE RAN-UP NORMALLY. (X)