FUEL TANK INSPECTION [MZR 1.8, MZR 2.0, MZR 2.5]

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Note

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

1.  Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [MZR 1.8, MZR 2.0, MZR 2.5].)

2.  Disconnect the negative battery cable.

3.  Remove the fuel tank and fuel pump unit as a single unit. (See FUEL TANK REMOVAL/INSTALLATION [MZR 1.8, MZR 2.0, MZR 2.5].)

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

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

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(2)  Apply a pressure of 3 kPa {22 mmHg, 0.8 inHg} to port A and wait for a while.

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

•  If there is airflow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZR 1.8, MZR 2.0, MZR 2.5].)

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

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6.  Level the fuel tank.

7.  Apply a pressure of 3 kPa {22 mmHg, 0.8 inHg} to port A and wait for a while.

8.  With the pressure still applied, verify that there is airflow from port C and the pressure is 0—3 kPa {0—22 mmHg, 0—0.8 inHg}.

•  If there is no airflow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZR 1.8, MZR 2.0, MZR 2.5].)

9.  Apply a pressure of –0.5 kPa {–3.7 mmHg, –0.1 inHg} to port A and wait for a while.

10.  With the pressure still applied, verify that there is airflow from port C and the pressure is –0.5—0 kPa {–3.7—0 mmHg, –0.1—0 inHg}.

•  If there is no airflow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZR 1.8, MZR 2.0, MZR 2.5].)

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

11.  Apply a pressure of 3 kPa {22 mmHg, 0.8 inHg} to port A and wait for a while.

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12.  With the pressure still applied, verify that there is no airflow from port C.

•  If there is airflow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZR 1.8, MZR 2.0, MZR 2.5].)