Q: How to check,repalce,maintenance and diagnosis Canister Purge Valve and Vapor Canister on Honda Passport?
A: The EVAP system consists of a charcoal-filled canister, canister purge valve, and the lines connecting the canister to the fuel tank, ported vacuum, and intake manifold vacuum. Poor idle, stalling, and poor driveability can be caused by an inoperative purge control solenoid, a damaged canister, split or cracked hoses, or hoses connected to the wrong tubes. Inspect each hose attached to the canister for kinks, leaks, and breaks. Apply a short length of hose to the lower tube of the purge control valve and attempt to blow through it. With a hand-held vacuum pump, apply vacuum to the EGR and canister purge control valve. For earlier models, label, then detach, all vacuum lines from the canister. For the 1996 and later OBD-II models, raise the rear of the vehicle and disconnect all hoses from the EVAP canister. Disconnect the electrical connector from the EVAP canister vent solenoid and remove the EVAP canister and mounting bracket. For the fuel tank pressure sensor, lower the fuel tank and disconnect the electrical connector. For the EVAP canister purge valve solenoid, disconnect the electrical connector and hoses.