Sonata GL V6-2.5L (1999)
Canister Purge Control Valve: Testing and Inspection
Canister Purge Port Vacuum Check
EVAP CANISTER PURGE PORT 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 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.
