What was found
DURING TAKE OFF ROLL, ENGINES STABILIZED AT 50% N1. ON SETTING THRUST TAKEOFF THE FLEX DETENT, THE NR 1 ENGINE SPOOLED NORMALLY TO TAKEOFF POWER. THE NR 2 ENGINE HESITATED CAUSING SEVERE YAW AND REJECTION OF TAKEOFF. BLEW OUT PS3 LINE. NO FOREIGN OBJECTS IN LINE AND COMPLIED WITH AMM 71-00-00, THE NR 2 ENG ACCELERATION TEST WITH NO FAULTS FOUND. OK FOR SERVICE.