As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE INSTALLATION FROM OVERHAUL, THE PERFORMANCE RUN PRODUCED THE "AUX FUEL PUMP" AND "FUEL PRESSURE LOW" LIGHTS ON THE ANNUNCIATOR PANEL CYCLING ON AND OFF TOGETHER. THIS HAPPENS WHEN THE FUEL PRESSURE IN THE HOPPER TANK DROPS BELOW 4.75 PSI. (FUEL PUMP 0.00) (K)