FUEL TANK INSPECTION [MZI-3.7]

id0114d2803200

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

1.  Complete the “BEFORE SERVICE PRECAUTION”. (See BEFORE SERVICE PRECAUTION [MZI-3.7].)

2.  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7].)

3.  To disconnect the fuel pump unit connector, remove the following parts:

(1)  Second-row seat (LH) (See SECOND-ROW SEAT REMOVAL/INSTALLATION.)
(2)  Edge cover (See LONG SLIDER REMOVAL/INSTALLATION.)
(3)  Long slider cover (See LONG SLIDER REMOVAL/INSTALLATION.)
(4)  Rear heat duct No.3 (See REAR HEAT DUCT COMPONENT REMOVAL/INSTALLATION.)
(5)  Disconnect the fuel pump unit connector.

4.  Disconnect the quick release connector and the fuel pump unit connector. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [MZI-3.7].)

5.  Disconnect the joint hose. (See FUEL TANK INSPECTION [MZI-3.7].)

6.  Disconnect the evaporative hose. (See FUEL TANK REMOVAL/INSTALLATION [MZI-3.7].)

7.  Remove the fuel tank with the fuel pump unit. (See FUEL TANK REMOVAL/INSTALLATION [MZI-3.7].)

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

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

2WD

ac9wzw00000875

4WD

ac9wzw00000876
(2)  Apply a pressure of 3 kPa {0.03 kgf/cm2, 0.4 psi} 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 [MZI-3.7].)

9.  Level the fuel tank.

10.  Remove the plug of the port B.

11.  Apply a pressure of 3 kPa {0.03 kgf/cm2, 0.4 psi} to port B and wait for a while.

12.  With the pressure still applied, verify that there is airflow from port A and the pressure is 0—3 kPa {0—0.03 kgf/cm2, 0—0.4 psi}.

•  If malfunction, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZI-3.7].)

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

14.  With the pressure still applied, verify that there is airflow from port A and the pressure is -0.5—0 kPa {-3.8—0 mmHg, -0.2—0 inHg}.

•  If malfunction, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZI-3.7].)
•  If there is airflow, place the fuel tank upside down.

15.  Apply a pressure of 3 kPa {0.03 kgf/cm2, 0.4 psi} to port B and wait for a while.

2WD

ac9wzw00000877

4WD

ac9wzw00000878

16.  With the pressure still applied, verify that there is no airflow from port A.

•  If there is airflow, replace the fuel tank. (See FUEL TANK REMOVAL/INSTALLATION [MZI-3.7].)