Fuel Tank Inspection - Mazda Mazda6 Workshop Manual Supplement

(2) Apply a slight amount of clean engine oil to
the sealing surface of the fuel pump unit.
(3) Align the fuel pipe on the fuel pump unit and
quick release connector so that the tabs of the
retainer are correctly fitted into the quick
release connector. Push the quick release
connector straight into the retainer until a click
is heard.
(4) Lightly pull and push the quick release
connector a few times by hand and verify that
it can move 2.0—3.0 mm {0.08—0.11 in} and
it is connected securely.
• If the quick release connector does not
move at all, verify that O-ring is not
damaged of that is has not slipped, and reconnect the quick release connector.
2. When the retainer is removed, perform the following procedure.
End Of Sie

FUEL TANK INSPECTION

Caution
• Disconnecting/connecting the quick release connector without cleaning it may possibly cause
damage to the fuel pipe and quick release connector. Always clean the quick release connector
joint area before disconnecting/connecting using a cloth or soft brush, and make sure that it is
free of foreign material.
Note
• This inspection is for two rollover valves and check valve (two-way) integrated in the fuel tank.
1. Remove the fuel tank with the fuel gauge sender unit. (See
2. Plug the fuel pipe of the fuel gauge sender unit.
3. Plug port C.
4. Connect the pump to port B.
5. Level the fuel tank.
6. Apply pressure of +2.0 kpa {+34 mmHg, +1.3
inHg} to port B.
(1) Verify there is airflow from port A.
• If there is no airflow, replace the fuel tank.
7. Apply pressure of –5.9 kPa {–44 mmHg, –1.7
inHg} to port B.
• If there is no vacuum, replace the fuel tank.
• If there is vacuum, turn the fuel tank
upside-down and proceed to next step.
8. Apply pressure of +2.0 kPa {+15 mmHg, +0.6
inHg} to port B.
(1) Verify there is no airflow from port A.
• If there is airflow, replace the fuel tank.
End Of Sie
FUEL SYSTEM
SEALING
SURFACE
F2–45 FUEL TANK
FUEL GAUGE SENDER UNIT
PLUG
CHECK VALVE
(TWO-WAY)
ROLLOVER VALVE
QUICK RELEASE
CONNECTOR
OIL OIL
PLASTIC FUEL HOSE
REMOVAL/INSTALLATION.)
ROLLOVER VALVE
B
C
A
A
PLUG
C
B
FUEL GAUGE SENDER UNIT
A6E3912W006
F2
A6E401242110202
PLUG
CHECK VALVE
(TWO-WAY)
A6E40122034
PLUG
A6E40122035
F2–49