FUEL TANK INSPECTION [MZI-3.7]

NOTE:
- The rollover valve and the fuel shut-off valve built into the fuel tank are inspected in this inspection.

1. Remove the connector and the fuel hose from the fuel pump unit. Quick Release Connector Removal/Installation

2. Remove the fuel tank with the fuel pump unit and fuel suction pipe bracket still installed. Service and Repair

3. Perform the following procedure to verify the fuel tank airtightness.
a. Plug the fuel pump unit pipe, ports B and C.

b. Apply a pressure to port A and wait for a while.

c. Verify that there is no air flow leakage from the fuel tank.

- If there is air flow, replace the fuel tank. Service and Repair

4. Plug the fuel pump unit pipe and port B.

5. Level the fuel tank.

6. Apply a pressure to port A and wait for a while.

7. With the pressure still applied, verify that there is air flow port C and the pressure.

- If there is no air flow, replace the fuel tank. Service and Repair
- If there is air flow, place the fuel tank upside down.

8. Apply a pressure to port A and wait for a while.

9. With the pressure still applied, verify that there is no air flow from port C.

- If there is air flow, replace the fuel tank. Service and Repair

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.

Safety Warning

Fuel Tank: Testing and Inspection

Use the Manual With the Right Hardware

When to See a Mechanic

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