Ford 2003 Mustang Workshop Manual page 2165

valve and plug the evaporative emissions canister
purge valve.
Pressurize the EVAP system to 3.48 kPa (14
inches H O).
2
Does the pressure drop immediately?
E9 TEST FOR BLOCKAGE IN VENTING PORTION OF
EVAP SYSTEM
Reconnect all components.
Connect the Evaporative Emission System Leak
Tester to the fuel filler pipe.
Close the canister vent solenoid. Refer to
Vent Solenoid Closing Procedure
Pressurize the EVAP system to 3.48 kPa (14
inches H O).
2
Open the canister vent solenoid.
Does the pressure drop immediately?
E10 TEST FOR BLOCKAGE IN THE FRESH AIR VENT
HOSE
Disconnect the fresh air vent hose from the fuel
filler pipe inside the luggage compartment.
Pressurize the EVAP system to 3.48 kPa (14
inches H O).
2
Does the pressure drop immediately?
E11 TEST FOR BLOCKAGE IN THE FRESH AIR
TUBE ON THE FUEL FILLER PIPE ASSEMBLY
Disconnect the fresh air tube from the fuel filler
pipe assembly.
emissions canister purge valve.
REFER to
Canister Purge Valve
CARRY OUT a leak test. REFER to
Evaporative Emission System Leak
Test
passes the leak test, CARRY OUT
the evaporative emission repair
verification drive cycle. REFER to
Evaporative Emission Repair
Verification Drive Cycle
section.
No
INSTALL a new evaporative
emissions return tube. CARRY OUT
a leak test. REFER to
Emission System Leak Test
section. If the system passes the
leak test, CARRY OUT the
evaporative emission repair
verification drive cycle. REFER to
Evaporative Emission Repair
Verification Drive Cycle
section.
Yes
GO to
No
Canister
GO to
in this section.
Yes
INSTALL a new fresh air vent hose.
CARRY OUT a leak test. REFER to
Evaporative Emission System Leak
Test
passes the leak test, CARRY OUT
the evaporative emission repair
verification drive cycle. REFER to
Evaporative Emission Repair
Verification Drive Cycle
section.
No
GO to
Yes
INSTALL a new fuel filler pipe
Evaporative Emission
in this section.
on this section. If the system
in this
Evaporative
in this
E14 .
E10 .
in this section. If the system
in this
E11 .
on this