What was found
FUEL LEAK, LT WING, LT TANK OVERFILLED, LT FUEL VALVE WILL NOT CLOSE. TRANSFERED 600 LBS OF FUEL OUT OF LT TANK, TO CENTER. WITH LT TANK CLOSED, TRIED TO FUEL CENTER & LT TANK IS STILL TAKING FUEL, PUSHED MANUAL POPPED SEVERAL TIMES, NO HELP, PERFORMED T/S & ATTEMPTED TO SHIFT FUEL FROM TANK 1 TO CENTER. NOTED A 800 LBS DIFFERANCE BTWN FUEL INDIATION IN FLT DECK TO INDICATOR ON WING. FUEL JETTISON FROM LT WING OVERFLOW OCCURRED. SUGGEST ACFT DEFUEL TO LOWER TANK LEVELS FOR T/S. IAW AMM 28-26-00-650-802. WHEN PROFORMING T/S NOTICED THE LT FUEL SHUTOFF VALVE STUCK IN OPEN POSTION, CLEANED SHUTOFF VALVE BUT ISSUE STILL CONTINE, R & R LT FUEL SHUTOFF VALVE, OPS CK GOOD, WHILE PRESSURE FUELLING VALVE SHUTOFF AUTOMATICLLY AT 8400 POUNDS. IAW FIM 28-21 TASK 801. REF AMM 28-21-51.