Fuel Shut-Off/Rollover Valves (Protege & Protege5)
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. See Figure. Fuel shut-off/rollover valves are an integral part of fuel tank. Evaporative gas check valve (two-way) is integrated with each rollover valve.
- Remove fuel tank. Connect Air Pressure Tester (49-U014-001) to an air compressor. Plug main fuel pipe, return pipe of fuel pump unit and port "A" of fuel tank. See Fig 1. Level fuel tank. Using air pressure tester 49-U014-001, apply 5.9 kPa pressure to port "B" and ensure air flows from port "C". If no airflow is present, replace fuel tank. If airflow is present, go to next step.
- Connect air pressure tester to port "C" and with port "A" plugged. Apply 2.0 kPa pressure to port "C". Air should flow from port "B". If airflow is not present, replace fuel tank. If airflow is present, go to next step.
- Connect air pressure tester to port "B" and turn fuel tank upside-down. Apply 0.99 kPa pressure to port "B". Ensure air does not flow from port "C". If airflow is present, replace fuel tank.