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P0455-EVAP LEAK MONITOR LARGE LEAK DETECTED (CONTINUED) 4. EVAPORATIVE EMISSION LEAK DETECTION NOTE: A thorough visual inspection of the Evap system hoses, tubes, and connections may save time in Remove the Air supply hose from the service port (if equipped) or from the #8404-ADP adapter. Connect the SMOKE supply tip (black hose) to the service port (if equipped) or to the #8404-ADP adapter. Set the smoke/air control switch to SMOKE. NOTE: The flow meter indicator ball will not move in the smoke mode. NOTE: Make sure that smoke has filled the EVAP system by continuing to press the remote smoke/air start NOTE: For optimal performance, introduce smoke into the system for an additional 60 seconds; continue If a leak is concealed from view (i.e., top of fuel tank), release the remote smoke/air start button, and use the ultra- The exiting smoke deposits a residual fluid that is either bright green or bright yellow in color when viewed with a NOTE: Carefully inspect the vent side of the EVAP Canister. Due to the filtering system in the canister the Was a leak found? Yes >> Repair or replace the leaking component as necessary. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 5 5. EVAP PURGE SOLENOID OPERATION NOTE: After disconnecting the Evap Purge Solenoid vacuum connections, inspect the lines and solenoid for Disconnect the vacuum hoses at the Evap Purge Solenoid. Using a hand vacuum pump, apply 10 in Hg to the 9 CAN 9 of the EVAP Purge Solenoid. NOTE: Monitor the vacuum gauge for at least 15 seconds. Does the EVAP Purge Solenoid hold vacuum? Yes >> Test Complete. No >> Replace the Evap Purge Solenoid. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 1886 ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10 DR/DH |