Ford F150 Pickup. Manual

Fig. 3: Identifying Fuel Tank And Lines Component Location
Courtesy of FORD MOTOR CO.

Natural gas labels are affixed to the inside of the fuel filler door.

Fuel Filler Valve

The fuel filler valve is located behind the fuel filler door inside the fuel filler compartment. The fuel filler valve
consists of a receptacle for fueling connection, a check valve, a manual backflow valve and a particulate filter.

Fuel Lines

The fuel filler, fuel tanks and fuel pressure regulator assembly are connected by stainless steel braided flexible
lines with oiled O-ring face seal fittings.

Coalescer/Filter

The coalescer assembly filters, separates and stores contamination or moisture found in the fuel system,
preventing moisture from entering the engine.

Fuel Tanks and Solenoid Valves

The fuel tanks are constructed of fiberglass-wrapped steel, mounted to the frame by insulated mounting straps.
The standard tanks are in the bed. There are two tanks, each measuring 37 cm (14.56 inches) in diameter by
81.2 cm (32 inches) long. They are bolted to the bed with the same bolts that retain the bed assembly. The
optional tank is located inside the LH frame rail, just forward of the rear axle. It is 30.5 cm (12 inches) in

WARNING:

Do not modify the system configuration or components, or replace
components with parts not specially designed for use with natural gas.
Ford motor company has specially designed the materials, components
and system configuration for the 5.4L F-250 natural gas vehicles, and
each particular system is precisely calibrated for efficient operation. The
use of different parts or materials can produce an untested configuration
that could result in fire or personal injury, or cause engine damage.

WARNING:

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

NOTE:

All standard production components and systems receive routine repair under
base warranty procedures.

2003 Ford Pickup F150

2003 ENGINE Fuel Tank And Lines-Natural Gas - F150 Pickup

Ford F150 Pickup. Manual - part 1188