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Home >> Mazda >> 2004 >> RX-8 1.3 3 >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System >> Non-Return Valve Inspection
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Non-Return Valve Inspection

  1. Remove the fuel pump. (See FUEL PUMP UNIT REMOVAL/INSTALLATION .)
    NOTE:
    • The non-return valve cannot be removed as it is built into the fuel tank.
    • The non-return valve is normally closed due to spring force.
  2. Verify that the non-return valve opens/closes through the fuel pump installation hole.
    • If it does not open/close or return to the normal position, replace the fuel tank.
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