Fuel Shut-Off Valve/Rollover Valve Inspection

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting using a cloth or soft brush, and make sure that it is free of foreign material.

Disconnect the plastic fuel hose and the FP unit connector. (See FUEL PUMP (FP) REMOVAL/INSTALLATION .)
Remove the fuel tank with the FP unit. (See FUEL TANK REMOVAL/INSTALLATION .)
Plug the fuel main pipe and fuel return pipe of the FP unit.
Plug port A.

Fig 1: Plugging Fuel Main Pipe And Fuel Return Pipe Of The FP Unit
Courtesy of MAZDA MOTORS CORP.
Level the fuel tank.
Blow through port B and verify that there is airflow from port C.
- If there is no airflow, replace the fuel tank.
- If there is airflow, plug port C and proceed to Step 7.
Blow through port B and verify that there is airflow from port A.

Fig 2: Blowing Through Port B And Verify That There Is Airflow From Port A
Courtesy of MAZDA MOTORS CORP.
- If there is no airflow, replace the fuel tank.
- If there is airflow, turn the fuel tank upside-down, and proceed to Step 8.
Blow through port B and verify that there is no airflow from port A.

Fig 3: Blowing Through Port B And Verify That There Is No Airflow From Port A
Courtesy of MAZDA MOTORS CORP.
- If there is airflow, replace the fuel tank.