Purge Port Vacuum Check

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




EVAP CANISTER PURGE PORT VACUUM CHECK
1. Disconnect the vacuum hose from the throttle body EVAP canister purge hose fitting 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.