Ford F150 Pickup. Instruction - part 1181

Fig. 8: Removing Dual Tanks 
Courtesy of FORD MOTOR CO. 

All Tank Configurations 

8. To install, reverse the removal procedure.  

TANK - COMPRESSED NATURAL GAS (CNG) 

Removal and Installation 

NOTE:

The LPG tank (single tanks only) must remain level or the fuel float will not 
read accurately.

NOTE:

All fuel lines must be leak tested. Refer to LEAK TEST -- BI-FUEL 
SYSTEM .

WARNING:

Do not modify the system configuration or components or replace 
components with components no specifically designed for use with 
natural gas. Ford Motor Company has specifically designed the materials, 
components and system configuration for the 5.4L F-Series Bi-Fuel 
vehicle, and each particular system is precisely calibrated for efficient 

 

2003 Ford Pickup F150 

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup

  

1. Relieve the bi-fuel system pressure. Refer to PRESSURE RELIEF -- NATURAL GAS BI-FUEL 

SYSTEM .  

2. Disconnect the battery ground cable.  

3. Remove the fuel tank shield. 

operation. The use of different parts or materials can produce an untested 
configuration that can result in fire or personal injury or cause engine 
damage.

WARNING:

It is important that your bi-fuel vehicle be properly maintained by Ford bi-
fuel trained personnel. If a concern occurs, it is important that properly 
trained personnel diagnose the cause. If a concern relates to the fuel 
system, correct part replacement is imperative to keep your vehicle 
operating at normal performance. Bi-fuel components and gasoline 
specific components are not interchangeable. If your vehicle is not 
serviced in accordance with bi-fuel service procedures, damage can 
occur and your warranty may be invalidated.

WARNING:

Fuel supply lines are always pressurized. When servicing fuel related 
components, do not smoke or carry lighted tobacco or an open flame of 
any type. Flammable mixtures may be present and can ignite, resulting in 
personal injury.

WARNING:

The natural gas fuel system is always pressurized to 655 kPa (95 psi) 
downstream of the fuel pressure regulator and up to 24821 kPa (3600 psi) 
upstream of the fuel pressure regulator. Use care when servicing the fuel 
system or personal injury can occur.

WARNING:

The natural gas fuel supply manifold is pressurized to 655 kPa (95 psi). 
Fuel pressure must be relieved prior to any fuel system service.

WARNING:

The fuel system pressure must be relieved before any component can be 
removed. The fuel tanks must be evacuated prior to tank removal. 
Removal of components without pressure relief or tank evacuation can 
cause natural gas to escape into the air and cause injury or death.

 

2003 Ford Pickup F150 

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup

  

Fig. 9: Removing Fuel Tank Shield 
Courtesy of FORD MOTOR CO. 

4. Disconnect the fuel line and the connector. 

 

2003 Ford Pickup F150 

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup

  

Fig. 10: Disconnecting Fuel Line And Connector 
Courtesy of FORD MOTOR CO. 

5. To install, reverse the removal procedure.  

6. Remove the fuel tank. 

NOTE:

All fuel lines must be leak tested. Refer to LEAK TEST -- BI-FUEL 
SYSTEM .

 

2003 Ford Pickup F150 

2003 ENGINE Fuel Tank And Lines-Bi-Fuel - F150 Pickup