What was found
(CAN) ON TAXI OUT, FUEL WAS OBSERVED LEAKING FROM NR 2 ENGINE. SHUTDOWN NR 2 ENGINE. AIRCRAFT WAS STOPPED AND TOWER WAS ADVISED. CFR MET STATIONARY AIRCRAFT AND DEEMED IT OKAY TO RETURN TO GATE FOR MTC INSPECTION. IFS REPORTED FUEL ODOUR IN THE CABIN. NO NEGATIVE PAX RESPONSE WAS OBSERVED. TROUBLESHOT IAW TSM 71-00-00-790-002-B. FADEC MOTORING TESTS DONE ON BOTH CHANNELS, NO LEAKS NOTED. NR 2 ENGINE RUN CARRIED OUT. NO LEAKS NOTED. NO ODOR NOTED IN FLT DECK. CONSIDERED SERVICEABLE.