What was found
WHILE SETTING THRUST FOR TAKEOFF, THE ENGINE NEVER SPOOLED UP PAST 56% N1, EVEN WHEN INSIDE THE CLIMB DETENT. ABORTED TAKEOFF, COMPLIED WITH REJECTED TAKEOFF QRH PROCEDURE, AND RETURNED TO GATE. FLIGHT # 5341 CLOSED VERIFIED ABORTED TAKE-OFF INSPECTION NOT REQUIRED IAW AMM. DENERGIZED AIRCRAFT AND ENERGIZED AIRCRAFT IAW AMM.PERFORMED A POWER ASSURANCE CHECK AND AN ACCELERATION CHECK IAW AMM. OPS CHECK GOOD AT THIS TIME.