Ford F150 Pickup. Instruction — part 1152

Fig. 3: View Of Coalescer/Filter Assembly
Courtesy of FORD MOTOR CO.

Typical Vent Stack Installation

Refer to the following illustration for a typical vent stack installation.

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup

Fig. 4: Typical Vent Stack
Courtesy of FORD MOTOR CO.

DIAGNOSIS & TESTING

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup

FUEL SYSTEM

Refer to appropriate SELF-DIAGNOSTICS article .

GENERAL PROCEDURES

DRAINING - COALESCER/FILTER

1. Perform the fuel line venting procedure; refer to FUEL LINE EVACUATION .

2. Place a container under the coalescer/filter assembly.

NOTE:

Hold the coalescer body with a wrench on the flats, to prevent loosening
of the filter housing.

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup

Fig. 5: Locating Coalescer/Filter Assembly Drain Plug
Courtesy of FORD MOTOR CO.

3. Slowly loosen the coalescer/filter assembly drain plug, to vent the system of any residual fuel pressure.

4. Remove the coalescer/filter assembly drain plug and allow all liquid to drain.

5. Install the coalescer/filter assembly drain plug and tighten to specifications.

Fig. 6: Installing Coalescer/Filter Assembly Drain Plug
Courtesy of FORD MOTOR CO.

6. Perform the fuel system leak test procedure; refer to FUEL SYSTEM LEAK TEST .

SPRING LOCK COUPLINGS

Special Tool(s)

2003 Ford Pickup F150

2003 GENERAL INFORMATION Fuel System - General Information - Natural Gas - F150 Pickup