Airflow inspection

Between port A and port C 

1. Plug the port B.
   Fig 1: Checking Charcoal Canister Airflow Between Port A And Port C

   Courtesy of MAZDA MOTORS CORP.
2. Apply a pressure of 0.98 kPa {7.4 mmHg, 0.29 inHg}to port A.
3. Verify that there is airflow from port C.

• If there is no airflow, replace the charcoal canister. (See CHARCOAL CANISTER REMOVAL/INSTALLATION .)

Between port B and port C 

1. Plug the port A.
   Fig 2: Checking Charcoal Canister Airflow Between Port B And Port C

   Courtesy of MAZDA MOTORS CORP.
2. Apply a pressure of 0.98 kPa {7.4 mmHg, 0.29 inHg}to port B.
3. Verify that there is airflow from port C.

• If there is no airflow, replace the charcoal canister. (See CHARCOAL CANISTER REMOVAL/INSTALLATION .)