As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AME NOTICED FUEL IN THE DRAIN CAN ON A DAILY CHECK. DURING A SUBSEQUENT GROUND RUN HE FEELS THAT THE ENGINE PERFORMANCE FROM LOW TO HIGH IDLE IS NOT AS FAST AS IT SHOULD BE. THE AIRCRAFT IS GROUNDED AND A REPLACEMENT PUMP ASSY AND SUPPORT PARTS HAVE BEEN DISPATCHED.