Vacuum Check

Checking Condition

Engine coolant temperature: 80 - 95°C (176-205°F)





1. Disconnect the vacuum hose from the throttle body EVAP canister purge hose fining and connect a vacuum gauge.

Purge Port Vacuum Curve:

2. Start the engine and check that, after raising the engine speed, vacuum remains fairly constant.

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