Airflow inspection

Between port A and port C 

• Plug the port B.
  Fig 1: Applying Pressure To Port A

  Courtesy of MAZDA MOTORS CORP.
• Apply a pressure of 0.98 kPa {7.4 mmHg, 0.29 inHg}  to port A.
• 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 

• Plug the port A.
  Fig 2: Applying Pressure To Port C

  Courtesy of MAZDA MOTORS CORP.
• Apply a pressure of 0.98 kPa {7.4 mmHg, 0.29 inHg}  to port C.
• Verify that there is airflow from port B.
  • If there is no airflow, replace the charcoal canister. (See CHARCOAL CANISTER REMOVAL/INSTALLATION .)