FUEL TANK INSPECTION [LF, L5]

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Note

• The rollover valve and the check valve (two-way) built into the fuel tank and fuel tank leakage are inspected in this inspection.

1. Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [LF, L5].)

2. Remove the fuel tank and the fuel pump unit as a single unit. (See FUEL TANK REMOVAL/INSTALLATION [LF, L5].)

3. Perform the following procedure to verify the fuel tank airtightness.

(1) Plug the fuel pump unit pipe, ports B and C.

LF (Fuel filter (high-pressure) is a built-in fuel pump unit)

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LF (Fuel filter (high-pressure) is not a built-in fuel pump unit)

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(2) Apply a pressure of 3 kPa {23 mmHg, 0.9 inHg} to port A and wait for a while.

(3) Verify that there is no air flow leakage from the fuel tank.

• If there is air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [LF, L5].)

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

LF (Fuel filter (high-pressure) is a built-in fuel pump unit)

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LF (Fuel filter (high-pressure) is not a built-in fuel pump unit)

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5. Level the fuel tank.

6. Apply a pressure of 3 kPa {23 mmHg, 0.9 inHg} 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 is 0—3 kPa {0—23 mmHg, 0—0.9 inHg}.

• If there is no air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [LF, L5].)

8. Apply a pressure of -0.5 kPa {-3.8 mmHg, -0.1 inHg} to port A and wait for a while.

9. With the pressure still applied, verify that there is air flow port C and the pressure is -0.5—0 kPa {-3.8—0 mmHg, -0.1—0 inHg}.

• If there is no air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [LF, L5].)

• If there is air flow, place the fuel tank upside down.

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

LF (Fuel filter (high-pressure) is a built-in fuel pump unit)

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LF (Fuel filter (high-pressure) is not a built-in fuel pump unit)

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

• If there is air flow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [LF, L5].)