What was found
(CAN) BOTH ENGINES WERE STARTED NORMALLY. UPON POWER APPLICATION FOR TAXI, THE LT ENGINE WOULD NOT RESPOND TO THROTTLE/POWER LEVER MOVEMENTS AND REMAINED AT IDLE. THE ACFT ENGINES WERE SHUTDOWN. MX FOUND CONTAMINATION IN THE AIRFRAME FUEL FILTERS AND TANKS. LT & RT FUEL TANKS, ALL FUEL HOSES & LT FCU & FUEL PUMP WERE DRAINED. FCU & FUEL PUMP FILTERS WERE REPLACED. GROUND RUNS COMPLETED, ALL CHECK SERVICEABLE. UPON SATISFACTORY TEST FLIGHT, THE ACFT WAS RETURNED TO SERVICE. (TC 20100222006)