Fuel-Filler Cap Inspection; Leakage Inspection - Mazda CX-7 2007 Workshop Manual

EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM DIAGRAM[L3 WITH TC]
EVAP SYSTEM LEAK
DETECTION PUMP
ROLLOVER VALVE
FUEL SHUT-OFF
VALVE
End Of Sie
FUEL-FILLER CAP INSPECTION[L3 WITH TC]
WM: FUEL FILLER CAP

Leakage Inspection

1. Perform the following SST (Evaporative Emission System Tester 134-01049) self-test:
Note
• If the tester does not work correctly during self-test, refer to the tester operators manual for more detailed
procedures.
(1) Verify that the gas cylinder valve is closed and the control valve located on the tester is in the TEST
position. All tester displays should be off at this time.
(2) Connect the long hose (part of SST) to the
tester.
(3) Connect the manifold assembly (part of SST)
to the long hose as shown.
(4) Open the gas cylinder valve and verify the gas
cylinder regulator left gauge reads 69— 82
kPa {0.71— 0.83 kgf/cm
(preset at factory).
• If not, refer to the tester operators manual
to contact tester manufacturer.
(5) Press the ON/OFF switch to turn on the SST
and make sure the left display reads 0.0.
(6) Turn the control valve on the tester to the FILL
position.
(7) Verify the left display reading is within 13.9 to 14.0 in of water.
• If not, adjust the pressure using the regulator knob located on the right side of the tester.
(8) Turn the control valve to TEST position and press the START switch.
(9) After the 2-min countdown (left display) is completed, the right display shows the total pressure loss for that
period. A 0.5 in of water loss is acceptable on the self-test.
• If the loss is more than 0.5 in of water, do one or more self-test. If the failed test repeats, check for leak
using the ultrasonic leak detector (part of SST).
2. Press the RESET switch to set the left display reading to 0.0.
01-16–4
EMISSION SYSTEM [L3 WITH TC]
CHARCOAL CANISTER
AIR FILTER
2
, 10— 12 psi}
PURGE SOLENOID VALVE
CHECK VALVE
PCV VALVE
id011639800200
EGR VALVE
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id011639801300
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