Evaporative System Service Port: Testing and Inspection
EVAP CANISTER PURGE PORT VACUUM CHECKChecking Condition
Engine coolant temperature: 80 - 95°C (176 - 205°F)
1. Disconnect the vacuum hose from the throttle body EVAP Canister purge hose fitting and connect a vacuum pump.
2. Start the engine and check to see that, after increasing the engine speed, vacuum raises fairly constant.
NOTE: If there is no vacuum created, it is possible that the throttle body port may be restricted and required cleaning.