What was found
(CAN) AFTER PUSH BACK FROM THE GATE, AN ATTENDANT NOTICED A STEADY STREAM OF FUEL LEAKING FROM THE NR 1 ENGINE AND NOTIFIED THE CAPTAIN. THE ENGINE WAS SHUTDOWN. MAINTENANCE WAS ADVISED AND THE ACFT WAS TOWED BACK INTO THE GATE FOR INSPECTION. TRANSIENT BLEED VALVE REPLCED IAW AMM 75-26-10-PB401 AND OPS CHECK SERVICE BUT ENGINE STILL LEAKING 75+ DROPS/MIN. FOUND NR 1 ENGINE HPTCC VALVE LEAKING. HPTCC REPLACED IAW AMM 75-21-10, PB401 CONF 06. LEAK CHECK SERV. CS FOR FAN COWL