Sedan

HOT ENGINE
1. Disconnect the #5 hose at the purge control diaphragm valve (on the charcoal canister) and connect a vacuum gauge to the hose.





2. Warm up the engine to normal operating temperature (cooling fan comes on).

There should be vacuum at idle, once the engine is warm.

- If there is no vacuum, replace the thermovalve and retest.

3. Disconnect vacuum gauge and reconnect the hose.
4. Remove fuel filler cap.





5. Remove canister purge air hose from frame and connect hose to vacuum gauge as shown.

6. Raise engine speed to 3,500 rpm.

Vacuum should appear on gauge within 1 minute.

- If vacuum appears on gauge in 1 minute, remove gauge, test is complete.
- If no vacuum, replace the canister and retest.