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Non Return Valve Inspection

WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the non return valve. (See FUEL TANK REMOVAL/INSTALLATION .)
  2. Verify that the non return valve opens up to 90°  when it is pushed from the fuel-filler pipe side, and it returns to the normal position by the spring force.
    • If the non return valve does not open up to 90°  or does not return to the normal position, replace the non return valve.
    Fig 1: Checking Non Return Valve Movement
    G01024555Courtesy of MAZDA MOTORS CORP.
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