2014 - Mazda6 - Engine

CHECK VALVE [SKYACTIV-G 2.5]

Purpose, Function

• The check valve maintains constant pressure in the fuel tank.

Construction

• The check valve is installed to the side of the charcoal canister.

  U.S.A. and CANADA

  

  Except U.S.A. and CANADA

  

• Mainly consists of valve, umbrella, and spring.

  

Operation

• The valve moves in response to the difference in air pressure between the fuel tank side and the atmospheric side, thereby changing the path of airflow.

• When the pressure in the fuel tank becomes negative due to fuel consumption or other factors, the path opens, drawing atmospheric air into the fuel tank.