What was found
REPORT FROM TOWER OF FUEL COMING FROM NR 2 ENGINE AFTER TAKEOFF. NR 2 FUEL FLOW 4000 NR HR HIGHER THAN OTHERS. ON REDUCTION OF THROTTLE NR 2 ENGINE STOPPED PRODUCING THRUST/FLAMEOUT, WENT THROUGH PRECAUTIONARY IN FLIGHT ENGINE SHUTDOWN PROCEDURE AT 1615Z AS PER QRH. FOUND NR 2 ENGINE FUEL PRESSURE AND PUMP VALVE IN LINE, NUTS HAD BACKED OF TO THE POINT OF EXPOSING O-RING. ALSO, FOUND O-RING CUT IN HALF. REMOVED AND REPLACED O-RING AND FLANGE NUTS, RESECURED IN LINE TO VALVE, OPS AND LEAK CHECKS GOOD ON GROUND ENGINE RUN-UP IAW DC-8 JET RUN-UP HANDBOOK, NO DEFECTS.