Evaporative Emission Control Canister: Testing and Inspection

Inspection
1. Look for loose connections, sharp bends or damage to the fuel vapor lines.
2. Look for distortion, cracks or fuel leakage.
3. After removing the EVAP canister, inspect for cracks or damage.

Purge Port Vacuum Curve:

EVAP CANISTER PURGE PORT VACUUM Inspection
Engine coolant temperature : 80-95°C (176-205°F)

1. Disconnect the vacuum hose from the intake manifold purge hose nipple and connect a hand vacuum pump to the nipple.
2. Start the engine and check that, after raising the engine speed by racing the engine, vacuum remains fairly constant.

NOTE: If there is no vacuum created, it is possible that the intake manifold port may be clogged and require cleaning.