Ford F150 Pickup. Instruction - part 1184

Fig. 16: Disconnecting Fuel Line 
Courtesy of FORD MOTOR CO. 

2. Disconnect the fuel line.  

3. Remove the nut and the fill valve. 

 

2003 Ford Pickup F150 

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

  

Fig. 17: Removing Nut And Fill Valve 
Courtesy of FORD MOTOR CO. 

4. To install, reverse the removal procedure.  

FILTER - COALESCENT 

Removal and Installation 

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 
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 

 

2003 Ford Pickup F150 

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

  

1. Relieve the natural gas fuel system pressure. Refer to PRESSURE RELIEF -- NATURAL GAS BI-

FUEL SYSTEM .  

2. Disconnect the battery ground cable.  

3. Raise the vehicle on the hoist. 

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 propane fuel to escape into the air and cause injury or death.

NOTE:

Use only new natural gas approved O-rings upon installation.

NOTE:

Lubricate the O-ring seals with Super Premium SAE 5W30 Motor Oil or 
equivalent meeting Ford specification WSS-M2C153-G.

 

2003 Ford Pickup F150 

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

  

Fig. 18: Disconnecting Fuel Lines And Discarding O-Ring Seals 
Courtesy of FORD MOTOR CO. 

4. Disconnect the fuel lines and discard the O-ring seals.  

5. Remove the two bolts and the coalescer. 

 

2003 Ford Pickup F150 

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