As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE OPERATED AT LOWER POWER SETTINGS ONLY. ENGINE DIED AT HALF TO FULL THROTTLE. FOUND ELECTRIC FUEL PUMP TO BE INOPERATIVE. UPON FURTHER INVESTIGATION FOUND THAT VALVE SEATS IN THE ELECTRIC FUEL PUMP HAD WORN ALLOWING THE VALVES TO WEDGE INTO THE SEAT. THIS RESTRICTED THE FLOW OF FUEL TO ENGINE DRIVEN FUEL PUMP.