Fuel Delivery and Air Induction: Service and Repair

Fuel System Cleaning


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 Release Procedure.
2. Drain the fuel tank.
3. Remove the fuel tank.
4. Remove the fuel sender assembly.
5. Flush the fuel tank with hot water.
6. Inspect the fuel pump inlet for dirt and debris. If dirt and debris are found, the fuel pump needs to be replaced.
7. 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.
8. Install the fuel sender assembly.
9. Reinstall the fuel tank.
10. Add fuel and install the fuel tank filler pipe cap.

Caution: Refer to Battery Disconnect Caution in Cautions and Notices.

11. Connect the negative battery cable.
12. Inspect for leaks.
12.1. Turn the ignition switch ON for 2 seconds.
12.2. Turn the ignition switch OFF for 10 seconds.
12.3. Turn the ignition switch ON.
12.4. Check for fuel leaks.
13. Reinstall the fuel injection sight shield. Refer to Engine Cover Replacement Service and Repair.