As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABORTED ENGINE START ENG #2. MAX MOTORING 22.4% - HUNG START AFTER START LEVER RAISED TO IDLE. COMPLIED WITH ASA QRH. GROUNDED - YES. FOUND #2 ENG PRSOV FAILED. REMOVED AND REPLACED #2 ENG PRSOV REF B737-800 AMM 36-11-04. OPS CK GOOD GROUND VERIFICATION SUCCESSFUL.