What was found
RIGHT SIDE BLEED AIR DUCT PRESSURE IS 7-8 PSI WITH ENGINE AT IDLE THRUST AND ENGINE OFF. GROUNDED - YES. REPLACED THE BAR REF B737-800 AMM 36-11-03. LK CK GOOD. DURING ENGINE RUN BLEED AIR STILL READS 8 PSI MAX. CYCLING SWITCH OFF BLEED AIR GOES TO ZERO. NO HELP. FOUND CRACKED CONTROL PRESSURE SENSE LINE AT THE HIGH STAGE VALVE (REMOVED) REF AMM 36-11-06. REPLACED CONTROL PRESSURE SENSE IAW AMM 36-11-06. #2 ENGINE BLEED CROSSOVER TEST OF OPERATION, NORMAL DUCT PRESSURE WITHIN LIMIT.