Fuel Shut-Off/Rollover Valves - Miata
WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
Vehicle is equipped with 2 fuel shut-off/rollover valves located in top of fuel tank. Fuel shut-off/rollover valves are part of fuel tank. For location, see Figure.
- Remove fuel tank. Plug main fuel pipe, return pipe of fuel pump unit and port "A" of fuel tank. See Fig 1. Level fuel tank. Blow air through port "B" and ensure air flows from port "C". If air flow is not present from port "C", replace fuel tank. If air flow is present, go to next step.
- Plug port "C". Blow air through port "B" and ensure air flows from port "A". If air flow is not present from port "A", replace fuel tank. If air flow is present, go to next step.
- Turn fuel tank upside down. With fuel tank turned upside down, blow air through port "B". Ensure air does not flow from port "A". If air flow is present, replace fuel tank.