As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LT ENGINE START, LT "START VALVE OPEN" LIGHT REMAINED ILLUMINATED AFTER ENGINE START SWITCH WAS TURNED OFF. TROUBLESHOOTING IAW THE FAULT ISOLATION MANUAL, DETERMINED THE START VALVE HAD FAILED. REPLACED LT ENGINE START VALVE AND OPS CHECK NORMAL.