FUEL TANK INSPECTION[MZ-CD 1.6 (Y6)]


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

1.  Remove the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION[MZ-CD 1.6 (Y6)].)

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

(1)  Plug the fuel gauge sender unit pipe, injector (High power-Euro 4), 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.

3.  Plug the fuel gauge sender unit pipe, injector (High power-Euro 4) and port B.

4.  Level the fuel tank.

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

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6.  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.

7.  Apply a pressure of –0.5 kPa {–3.7 mmHg, –0.1 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—–0.5 kPa {0—–3.7 mmHg, 0—–0.1 inHg}.

•  If there is no airflow, replace the fuel tank.
•  If there is airflow, place the fuel tank upside down.

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

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

•  If there is airflow, replace the fuel tank.