What was found
DURING PREFLIGHT, WHEN THE FUEL PUMPS WERE SELECTED ON, THE NR 2 ENGINE HAD A FUEL LEAK COMING FROM THE PYLON FUEL DRAIN LINE. THE FUEL LEAK WAS COMING FROM LINE DOWNSTREAM FIRE SOV. R & R THE PACKING ON THE NR 2 ENGINE FUEL FEED LINE AND CONDUIT BETWEEN LP VALVE AND PYLON BULKHEAD IAW AMM 28-20-00-04. RAN THE RT ENGINE IAW JRH, PARAMETERS NORMAL.