What was found
FOUND ON PREFLIGHT - JET FUEL DRIP (1 DRIP PER 4-5 SECONDS) UNDER #2 ENGINE NACELLE. REPORTED AT 1852 Z. GROUNDED - YES. #2 ENG FUEL LEAKS FROM LEFT VSV DRAIN: 2 DROPS P/M, RIGHT VSV DRAIN: 9 DROPS P/M, AND OIL / FUEL HEAT EXCHANGER PAD DRAIN: 2 DROPS P/M WITH ENG AT IDLE. REPLACED THE LEFT AND RIGHT VSV ACTUATORS, OIL/FUEL HEAT EXCHANGER, AND SERVO FUEL HEATER REF B737-900 AMM 75-31-01, 73-11-07, 79-21-02, LK AND OPS CKS GOOD.