Ford F150 Pickup. Instruction - part 1189

diameter by 183 cm (72 inches) long. Each tank has an internal, normally closed solenoid shutoff valve wired to 
the inertia fuel shutoff circuit to isolate the fuel tanks in the event of a collision. 

Fuel Tank Straps 

The fuel tank straps are made of welded steel and have rubber insulation to protect the fuel tank from wear due 
to vibration. The fuel tank straps are bolted to the frame and its crossmembers. 

DIAGNOSIS AND TESTING 

FUEL TANK AND LINES 

Special Tool(s) 

Fig. 4: Identifying Special Tools 
Courtesy of FORD MOTOR CO. 

Inspection and Verification 

 

2003 Ford Pickup F150 

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

  

1. Verify the customer's original concern by operating the vehicle to duplicate the condition.  

2. Inspect to determine if one of the following mechanical or electrical concerns applies. 

Visual Inspection Chart 

Fig. 5: Visual Inspection Chart 
Courtesy of FORD MOTOR CO. 

3. If the inspection reveals obvious concern(s) that can be readily identified, repair as required.  

4. If the concern(s) remains after the inspection, determine the symptom(s) and go to Fig. 6 .  

Symptom Chart 

Fig. 6: Fuel Tank And Lines Symptom Chart 
Courtesy of FORD MOTOR CO. 

Pinpoint Test 

PINPOINT TEST A: UNABLE TO VENT FUEL TANKS 

 

2003 Ford Pickup F150 

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

  

Fig. 7: Pinpoint Test A1 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

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

  

Fig. 8: Pinpoint Test A1 Cont.-A3 
Courtesy of FORD MOTOR CO. 

 

2003 Ford Pickup F150 

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