Airflow inspection

1. Perform the following procedure to verify the charcoal canister airflow.

   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 1.8 kPa {14 mmHg, 0.53 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 2.0 kPa {15 mmHg, 0.59 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 .)