What was found
NR 2 ENGINE FUEL FLOW WAS 3,000 PPH GREATER IN CLIMB AND 1,000 PPH GREATER IN CRUISE THAN NR 1 ENIGNE. NR 2 ENGINE FUEL USEAGE WAS 1,000 LBS MORE ON LEVEL OFF WHEN CHECKED WITH THE FUEL QUANTITY SYSTEM. THE FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE FUEL FLOW TRANSMITTER, RUNUP AND LEAK CHECK WAS SATISFACTORY.