What was found
NR 2 ENGINE FAILED IN CRUISE FL340. AP/AT ON, CROSS-FEED OPEN FOR REMAINING CTR TANK FUEL. COMPLETED QRH PROCEDURE/SHUTDOWN, AND 2 RESTART ATTEMPTS. NO FUEL FLOW OR EGT- SPAR VALVE REMAINED CLOSED WHEN START LEVER WAS RAISED TO IDLE. NO VIBRATIONS NOTED. ACFT GROUNDED. DIV TIME 1 HOUR 15 MINUTES CYCLED NR 2 ENGINE FUEL SPAR VALVE SEVERAL TIMES, NO DISCREPANCIES NOTED. INSPECTED AND REINSTALLED NR 2 ENGINE FUEL SPAR VALVE DISCONNECT PLUG AND JACK, NO DISCREPANCIES NOTED REF AMM 28-22-11. OPENED NR 2 ENG OTBD COWL. NR 2 ENG BITE INOPERATIVE. REPLACED NR 2 EEC. WHILE PERFORMING T/S FOUND NR 2 ENG TAI COWL VALVE AFT COUPLING NOT ATTACHED. REPLACED AFT COUPLING NR 2 TAI DUCT REF AMM 30-21-11. LEAK CHECK NORMAL.