As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE START VALVE DID NOT OPEN WHEN START SWITCH PLACED IN GROUND POSITION. QRC/QRH PROCEDURE ACCOMPLISHED. APU DUCT PRESSURE DID RISE WHEN GROUND SELECTED. NO START VALVE OPEN LIGHT OR ENGINE ROTATION. REMOVED & REPLACED NR 1 ENG START VALVE PER AMM 80 11 03 000 801 F00 AND 80 11 03 400 801 F00. OPS AND LEAK CHECK GOOD.