What was found
AIR ENG2 BLEED ABNORM PR PFR AND BMC 2 BITE SHOWING: PRESS REG-V 4001HA2 OR SOL 10HA2 OR SENSE LINE. T/S REF TSM 36-11-00-810-810-A. PERFORMED LEAK CHECK ON THE #2 ENG PRV BRAIDED SENSE LINE AND RIGID LINES. NO LEAKS NOTED. PERFORMED HEALTH CHECK ON PRV 4001HA2. HEALTH CHECK FAILED. BENCH CHECKED NEW PRV. NEW VALVE OPENS AT 8 PSI. REMOVED AND REPLACED ENGINE #2 BLEED PRV REF AMM 36-11-52, PERFORMED #2 ENG POWER RUN, FOUND PRV CLOSES A FEW SECONDS AFTER ENG BLEED TRANSITIONS FROM HP CLOSED TO IP APPRX 60% N1. DUPLICATED THREE TIMES. R&R PRV CONTROL SOLENOID REF AMM 36-11-55-400-001-A. PERFORMED POWER RUN AGAIN. HP/PRV VALVES OPERATE NORMAL WITH NORMAL PRESSURES.