As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENIGNE WOULD NOT START, LEFT LOW FUEL PRESSURE ANNUNCIATOR LIGHT DID NOT EXTINGUISH DURING START ATTEMPT. FOUND LEFT FIREWALL FUEL SHUT-OFF VALVE IN CLOSED POSITION. PILOT TESTED FIREWALL SHUT-OFF VALVES DURING PRE-FLIGHT. LEFT VALVE STAYED CLOSED AFTER SWITCH WAS RESET TO NORMAL. VALVE FAILED IN CLOSED POSITION.