As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENG START FOR FLIGHT, THE MECHANIC OBSERVED A FUEL LEAK ON ENG 2, DUE THAT REASON THE ACFT WAS RETURNED TO THE GATE & HELD ON GND FOR MX. THE CAUSE OF THE FUEL LEAK WAS IDENTIFIED AS THE HPTACC & THE TRANSIENT BLEED VLV. R & R THE HPTACC IN ACCORDANCE WITH AMM 75-21-10 PB401 & THE TRANSIENT BLEED VLV IAW AMM 75-26-10 PB401. PERFORMED THE CORRESPONDING TESTS WITH NORMAL RESULTS. THE ACFT WAS RETURNED TO SERVICE. TRANSIENT BLEED VLV PN 3291390-2, SN GRTM5017.