Notice: Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering the open pipes and passages.

Important: When flushing the fuel tank, the fuel and water mixture needs to be treated as a hazardous material. The material needs to be handled in accordance with all local, state and federal laws and regulations.

Important: When ever the fuel tank is cleaned, the fuel pump fuel strainer must be inspected. If the fuel pump fuel strainer is contaminated, the fuel pump fuel strainer must be replaced and the fuel pump must be inspected.

Important: Always maintain cleanliness when servicing fuel system components.

1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief .
2. Drain the fuel tank. Refer to Fuel Tank Draining .
3. Raise the vehicle. Go to Lifting and Jacking the Vehicle .
4. Remove the fuel tank. Refer to Fuel Tank Replacement .
5. Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
6. Inspect the fuel pump inlet for dirt and debris. If dirt and debris are found, the fuel pump needs to be replaced.
7. Flush the fuel tank with hot water.
8. Pour the water out of the fuel sender assembly opening in the fuel tank. Rock the fuel tank in order to be sure that the removal of the water from the fuel tank is complete.
9. Allow the fuel tank to dry.
10. Install the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
11. Install the fuel tank. Refer to Fuel Tank Replacement .
12. Lower the vehicle.
13. Add fuel and reinstall the fuel tank filler pipe cap.
14. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
15. Inspect for leaks.

15.1.

Turn the ignition switch ON for 2 seconds.

15.2.

Turn the ignition switch OFF for 10 seconds.

15.3.

Turn the ignition switch ON.

15.4.

Check for fuel leaks.

16. Reinstall the fuel injection sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.