Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 247 (FUEL SYSTEM)FUEL TANK INSPECTION
2008 Mazda 6 s Sport, 4D Hatchback, Standard
Fuel Tank Inspection
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Fuel Tank Inspection
WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- The two rollover valves built into the fuel tank are inspected in this inspection.
- Follow the before repair procedure and perform the fuel line safety procedure. (See BEFORE REPAIR PROCEDURE .)
- Disconnect the negative battery cable.
- Remove the connector and the fuel hose from the fuel pump unit. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION .)
- Remove the fuel tank with the fuel pump unit and fuel suction pipe bracket still installed. (See FUEL TANK REMOVAL/INSTALLATION .)
- Plug the fuel pump unit pipe and the port C.
- Set the fuel tank on a level surface.
- Verify that there is air flow through the port A when pressurizing port B.
- If there is no air flow, replace the fuel tank.
- Verify that there is air flow through port B when pressurizing the port A.
- If there is no air flow, replace the fuel tank.
- If there is air flow, place the fuel tank upside down.
- Verify that there is no air flow through port A when pressurizing the port B.
- If there is air flow, replace the fuel tank.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.