Ford F150 Pickup. Instruction - part 1357

Aviator, Econoline, Escape, Excursion, Expedition, Explorer, Explorer Sport, Explorer Sport Trac, F250-550 Super 
Duty Pickup, Mountaineer, Navigator, Ranger & Windstar 

1. Testing EVAP Canister, Canister Vent Solenoid Flow & Canister Vent Hose - Connect Evaporative 

Emissions System Leak Tester (134-00056) to fuel filler pipe. Pressurize system to 14 in. H2O (3.48 
kPa). If pressure drops immediately, EVAP system is not blocked, go to step 6 . On models equipped 
with a canister vent hose assembly, if pressure does not drop immediately, go to next step. On models 
equipped with canister vent solenoid, if pressure does not drop immediately, go to step 3 . On all other 
models, if pressure does not drop immediately, go to step 4 . 

2. Testing Canister Vent Hose Assembly For Blockage 

 
Disconnect canister vent hose assembly from EVAP canister. EVAP canisters are located on top of or 
near the fuel tank. Pressurize system to 14 in. H2O (3.48 kPa). If pressure does not drop immediately, go 
to step 4 . If pressure drops immediately, replace canister vent solenoid hose assembly. Perform 
evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . 
If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & 
GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is 
performed. 

3. Testing Canister Vent Solenoid For Blockage 

 
Remove canister vent solenoid. Vent solenoid is located on or near EVAP canister. Pressurize system to 
14 in. H2O (3.48 kPa). If pressure does not drop immediately, go to next step. If pressure drops 
immediately, replace canister vent solenoid. Perform evaporative emissions system leak test. See 
EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES 
in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE 
CHECK & EVAP MONITOR "BYPASS" CHECK is performed. 

4. Testing EVAP Canister 

 
Disconnect EVAP canister tube from fuel tank at "F" fitting from EVAP canister. EVAP canisters are 
located on top of or near the fuel tank. Pressurize system to 14 in. H2O (3.48 kPa). If pressure does not 
drop immediately, go to next step. If pressure drops immediately, replace EVAP canister. Perform 
evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . 
If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & 

NOTE:

After each service or repair procedure has been completed, reconnect all 
components and perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-
FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR 
"BYPASS" CHECK is performed. Clear DTCs and repeat QUICK TEST in SELF-
DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article to ensure all EEC-V 
systems are working properly and DTCs are no longer present.

NOTE:

Enter this test only when all steps under QUICK TEST have been successfully 
completed and hiss still exists when fuel cap is opened or if directed here from 
another test or chart.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline

  

GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is 
performed. 

5. Testing EVAP Canister Tube Or Fuel Vapor Vent Valve For Blockage 

 
Disconnect fuel vapor valve assembly from EVAP canister tube. Pressurize system to 14 in. H2O (3.48 
kPa). If pressure drops immediately, replace EVAP canister tube and/or fuel vapor valve tube between 
fuel tank and EVAP canister and bracket assembly. Perform evaporative emissions system leak test. See 
EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES 
in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE 
CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure does not drop immediately, 
replace fuel vapor valve(s) or assembly. Perform evaporative emissions system leak test. See 
EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES 
in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE 
CHECK & EVAP MONITOR "BYPASS" CHECK is performed. 

6. Testing For Blockage Between EVAP Canister Purge Valve & Fuel Tank 

 
Remove fuel tank fuel vapor hose from EVAP canister purge valve. Turn ignition on. On models with a 
canister vent solenoid, using scan tool, close canister vent solenoid. Select OUTPUT TEST MODE, FTP 
and FTP V PID. Select ALL OFF mode. Press START button on scan tool to close canister vent solenoid. 
On models without canister vent solenoid, plug canister vent hose assembly or plug canister vent cap. 
Pressurize system to 14 in. H2O (3.48 kPa). If pressure does not drop immediately, replace fuel vapor 
hose. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM 
LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-
FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" 
CHECK is performed. If pressure drops immediately, system has passed. Reconnect all components. On 
models with a canister vent solenoid, perform evaporative emissions system leak test. See 
EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES 
in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE 
CHECK & EVAP MONITOR "BYPASS" CHECK is performed. On models without canister vent 
solenoid, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE 
article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed.  

Blackwood 

1. Testing EVAP Canister, Canister Vent Solenoid And Canister Vent Hose Assembly For Blockage - 

Connect Evaporative Emissions System Leak Tester (134-00056) to fuel filler pipe. Pressurize system to 
14 in. H2O (3.48 kPa). If pressure drops immediately, EVAP system has passed the EVAP canister and 
bracket assembly blockage test. Go to step 5 . If pressure does not drop immediately; 

z

Vehicles equipped with a canister vent hose assembly, go to next step.  

z

Vehicles equipped with a canister vent solenoid, go to step 3 .  

z

All others, go to step 4 .  

2. Testing Canister Vent Solenoid For Blockage 

 
Remove the canister vent solenoid from the EVAP canister. EVAP canisters are located on top of or near 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline

  

the fuel tank. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace canister 
vent solenoid. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS 
SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - 
CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR 
"BYPASS" CHECK is performed. If pressure does not drop immediately, go to next step. 

3. Testing EVAP Canister For Blockage 

 
Disconnect the EVAP canister tube (from the fuel tank) at the F-fitting from the EVAP canister. 
Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace EVAP canister. 
Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK 
TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & 
GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is 
performed. If pressure does not drop immediately, go to next step. 

4. Testing EVAP Canister Tube Or Fuel Vapor Vent Valve Assembly For Blockage 

 
Disconnect the fuel vapor vent valve assembly from the EVAP canister tube. Pressurize system to 14 in. 
H2O (3.48 kPa). If pressure drops immediately, replace EVAP canister tube and/or fuel vapor tube(s) 
between the fuel tank and the EVAP canister and bracket assembly. Perform evaporative emissions 
system leak test. See 

EVAPORATIVE EMISSIONS SYSTEM LEAK TEST

 . If system passes, 

perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. 
Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure 
does not drop immediately, replace fuel vapor vent valve(s) or assembly. Perform evaporative emissions 
system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, 
perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. 
Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. 

5. Testing For Blockage Between EVAP Canister Purge Valve And Fuel Tank 

 
Remove the fuel vapor hose (from the fuel tank) at the EVAP canister purge valve. Turn ignition switch 
to ON position. Close the canister vent solenoid. Select OUTPUT TEST MODE, FTP and FTP V PID. 
Select ALL OFF mode. Press START button on scan tool to close canister vent solenoid. Pressurize 
system to 14 in. H2O (3.48 kPa). If pressure drops immediately, EVAP system has passed all the 
blockage tests. Reconnect all components. Perform evaporative emissions system leak test. See 
EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES 
in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE 
CHECK & EVAP MONITOR "BYPASS" CHECK is performed. For vehicles without a canister vent 
solenoid, plug the canister vent hose assembly or the canister vent cap. Perform evaporative emissions 
system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, 
perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. 
Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If pressure 
does not drop immediately, replace fuel vapor hose. Perform evaporative emissions system leak test. See 
EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system passes, perform DRIVE CYCLES 
in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE article. Ensure PENDING CODE 
CHECK & EVAP MONITOR "BYPASS" CHECK is performed.  

Crown Victoria, Grand Marquis, Marauder & Town Car

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline

  

1. Testing EVAP Canister & Canister Vent Solenoid Flow - Connect Evaporative Emissions System 

Leak Tester (134-00056) to test port. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops 
immediately, EVAP canister and vent solenoid are not blocked, go to step 9 . If pressure does not drop 
immediately, go to next step. 

2. Testing Canister Vent Solenoid Remote Vent Hose Assembly For Blockage 

 
Disconnect canister vent solenoid remote vent hose from in-line connector. Pressurize system to 14 in. 
H2O (3.48 kPa). If pressure drops immediately, replace canister vent solenoid remote vent hose. Perform 
evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . 
If pressure does not drop immediately, go to next step. 

3. Testing Canister Vent Solenoid Hose Assembly For Blockage 

 
Disconnect canister vent solenoid hose assembly. Pressurize system to 14 in. H2O (3.48 kPa). If pressure 
drops immediately, replace canister vent solenoid hose assembly. Perform evaporative emissions system 
leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If pressure does not drop 
immediately, go to next step. 

4. Testing Canister Vent Solenoid For Blockage 

 
Remove canister vent solenoid. Canister vent solenoid is under rear of vehicle, next to EVAP canister. 
Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace canister vent solenoid. 
Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK 
TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & 
GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is 
performed. If pressure does not drop immediately, go to next step. 

5. Testing EVAP Canister 

 
Disconnect EVAP canister tube at canister that runs from EVAP canister to fuel tank. Pressurize system 
to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace EVAP canister. Perform evaporative 
emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM LEAK TEST . If system 
passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE 
article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" CHECK is performed. If 
pressure does not drop immediately, go to next step. 

6. Testing EVAP Canister Tube 

 
Disconnect EVAP canister tube at fuel vapor valve tube assembly that runs from EVAP canister to fuel 
tank. Pressurize system to 14 in. H2O (3.48 kPa). If pressure drops immediately, replace EVAP canister 
tube. Perform evaporative emissions system leak test. See EVAPORATIVE EMISSIONS SYSTEM 
LEAK TEST . If system passes, perform DRIVE CYCLES in SELF-DIAGNOSTICS - CNG, FLEX-
FUEL & GASOLINE article. Ensure PENDING CODE CHECK & EVAP MONITOR "BYPASS" 
CHECK is performed. If pressure does not drop immediately, go to next step. 

7. Testing EVAP Canister Purge Outlet Tube 

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE System & Component Testing - Gasoline