What was found
BOS - ABORTED TAKEOFF - FLT 0068 - ON TAKEOFF AT BOS EN ROUTE FOR PHX RECEIVED ECAM INDICATIONS, ENG 1 FADEC, ENG 1 COMPRESSOR, ENG 1 FAIL, ENG 1 FUEL CTRL FAULT. REJECTED TAKEOFF AT LOW SPEED. MAINTENANCE TROUBLESHOT AND REPLACED NR 1 ENGINE FUEL METERING UNIT (FMU) IAW T/C R5M73308, LEAK AND OPERATIONAL CHECK WAS GOOD. TEAR DOWN REPORT CONFIRMED FAULT. TESTED UNIT IAW CMM BASIC. PERFORMANCE OF FMU CONSIDERED UNACCEPTABLE WITH DETERATION BEING ATTRIBUTED TO HEAVY FUEL LACQUER IN MAIN INLET FILTER. AFTER REPLACING MAIN INLET FILTER, PERFOMANCE OF THIS FMU RESTORED TO ACCEPTABLE LIMITS.