What was found
LEFT ENGINE BLEED OFF MSG AFTER START. COMPLETED QRH MSG REMAINS.(<P>PERFORMED AIR SUPPLY BITE TEST IAW 767 AMM 36-23-00, SUSPECT BAD PRV. REMOVED & REPLACED PRV IAW 767 AMM 36-11-18. PERFORMED ENGINE RUNS IAW 767 AMM 71-00-00, OPS CHECK FAILED, LEFT ENGINE NO DUCT PRESSURE.</P><P>LP 1466400, ITEM M4: REMOVED AND REPLACED PRV CONTROLLER IAW AMM 36-11-19, S/N OFF: 2017070012, P/N OFF: 792755-15. OPS CHECK FAILED.</P><P>LP 1466401, ITEM M7: REF B767 WDM 36-11-61 FOUND OPEN WIRE BETWEEN CONNECTOR P4156P AND PRV VVALVE V325, PIN 7-TERMINAL 3. REPLACED WIRE BUNDLE FROM CONNECTOR D4156P TO LEFT ENG PRV V325, IAW B767 SWPM 20-10-11. LEFT ENGINE BLEED OPS CHECK NML, WIRES CHK OK.</P><P>LP 1466402, ITEM M10: REMOVED AND REINSTALLED PRV ACTUATOR SUPPLY PRESSURE HOSE AND PRECOOLER REGULATED PRESSURE LINE IN CORRECT POSITION. IAW AMM 20-11-00, OPS CHECK & LEAK CHECK GOOD AT THIS TIME IAW BAMM 36-11-15. BAMM 36-11-18 AND BAMM 36-11-19</P>)