What was found
DURING TAKEOFF, FUEL PRESSURE GAUGE GAVE A READING OF 0 PSI. THE ACFT HAD TO ABORT TAKEOFF AND RETURN TO RAMP AT DEPARTING AIRPORT. MAINTENANCE GROUND RAN ACFT WITH SAME RESULTS AND REPLACED THE ELECTRIC FUEL PUMP. AFTER THE FUEL PUMP WAS REPLACED, ACFT OPERATED NORMALLY. FURTHER INSPECTION OF THE ELECTRIC FUEL PUMP FOUND THE BALL VALVE AND BALL VALVE HOUSING TO BE SEVERELY WORN. THIS COULD HAVE CAUSED A FUEL BLOCKAGE WHICH IS CRITICAL DUE TO THE FUEL SYSTEM BEING CONNECTED IN SERIES.