As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT WAS RUNNING ENGINE ON THE GROUND AND THE COMPRESSOR STARTED STALLING. MAINTENANCE PERSONNEL DISCOVERED THE ENGINE BLEED VALVE WAS STUCK IN THE CLOSED POSITION. BLEED VALVE HAD 103.4 TSO. BLEED VALVE WAS CHANGED OUT AND THE ISSUE WENT AWAY.