As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENG START VALVE WILL NOT OPEN USING COCKPIT START SWITCH. REPLACED OF LEFT ENGINE START SWITCH, NO HELP START VALVE DOES NOT OPERATE. REPLACE NR 1 ENG START VALVE AND RESEATED NR 1 ENG N2 SPEED CARD, ENG STARTS NORMAL AND START SWITCH OPERATION NORMAL.