As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WITH THE BOOSTER PUMP ON, THE ENGINE DRIVEN FUEL PUMP WAS FOUND INTERNALY LEAKING THROUGH THE PRESSURE REGULATOR DIAPHRAGM CHAMBER IN TO THE PUMP VENT LINE TO END UP IN THE INDUCTION SYSTEM. A NEW FUEL PUMP INSTALLED AND FOUND SERVICEABLE.