Ford 2003 Mustang Workshop Manual page 2154

inches H O)?
2
A7 CHECK FOR LEAKS IN THE
COMPLETE EVAP SYSTEM
Connect the Evaporative Emission
System Leak Tester to the EVAP test
port.
Key in ON position.
Close the canister vent solenoid. Refer
to Canister Vent Solenoid Closing
Procedure in this section.
Pressurize the EVAP system to 3.48
kPa (14 inches H
Using the ultrasonic leak detector,
check the following EVAP system
locations:
EVAP return tube to EVAP
canister purge valve
EVAP canister purge valve to
EVAP canister— canister vent
solenoid assembly
EVAP canister — canister vent
solenoid assembly to fuel tank
fuel filler cap and fuel filler tube
Is a leak detected at EVAP return
tube, EVAP canister purge outlet
tube or EVAP canister tube or
associated hose?
A8 CHECK FOR SMALL LEAK FROM THE
EVAP RETURN TUBE TO THE FUEL
VAPOR TEE
Disconnect the EVAP canister purge
outlet tube at the fuel vapor tee. Plug
the opening in the EVAP canister
purge outlet tube.
Connect the Evaporative Emission
System Leak Tester to the EVAP test
port.
Pressurize the EVAP system to 3.48
kPa (14 inches H
Using the ultrasonic leak detector,
check the EVAP system from the
intake manifold to the EVAP canister
purge outlet tube.
Is a leak detected?
A9 CHECK FOR SMALL LEAK BETWEEN
EVAP CANISTER AND FUEL TANK FILLER
PIPE
Connect the Evaporative Emission
System Leak Tester to the fuel filler
pipe.
Transfer the plug from the EVAP
canister purge outlet tube to the fuel
vapor tee.
Turn the Evaporative Emission System
Leak Tester selector to the FILL
position.
Key in ON position.
Close the canister vent solenoid. Refer
to Canister Vent Solenoid Closing
O).
2
O).
2
Yes
REPAIR or INSTALL new components as
necessary. CARRY OUT the evaporative
emission system leak test. REFER to
Evaporative Emission System Leak Test
section. If the system passes the leak test,
CARRY OUT the evaporative emissions repair
verification drive cycle. REFER to
Emission Repair Verification Drive Cycle
section.
No
DISCONTINUE pressurizing the system. GO to
A8 .
Yes
REPAIR or INSTALL new components as
necessary. REPEAT Step A6 to verify the repair.
GO to A9 .
No
GO to A9 .
Yes
REPAIR or INSTALL new components as
necessary.
GO to A10 .
No
GO to A10 .
in this
Evaporative
in this