As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PREFORMING LEAK CHECK FOR TSR710795 FOUND STEADY FUEL DRIPPING BETWEEN THE FUEL PUMP AND THE HMU ON THE NR 1 ENGINE LEAK APPEARS TO BE COMING FROM HMU GASKET. GROUNDED-YES. WHILE PERFORMING IDLE LEAK CHECK, FOUND NR 1 ENGINE SERVO FUEL HEATER LEAKING. REMOVED AND REPLACED NR 1 ENGINE SERVO FUEL HEATER, REF B737-900 AMM 73-11-07-000-801-F00 AND AMM 73-11-07-400-801-F00. LEAK CHECK GOOD. NO LEAK AT THE HMU/FUEL PUMP GASKET.