Fuel Delivery and Air Induction: Service and Repair

Fuel System Cleaning

Removal Procedure
Warning: Refer to Gasoline/Gasoline Vapors Warning Service Precautions.


The following procedure covers the disassembly and the inspection of the complete fuel supply system. If the fuel system is contaminated, the fuel system can be cleaned. You can usually determine the extent of the fuel system contamination during the disassembly.

1. Remove the fuel pump module. Refer to Fuel Tank Module Replacement Service and Repair.
2. Locate the tank in a suitable work area away from any heat, any flame, or any other source of ignition.
3. Inspect the fuel sender strainer. Replace the fuel tank module if the strainer is contaminated.

Note: When flushing the fuel tank, handle the fuel and water mixture as a hazardous material. Handle the fuel and water in accordance with all applicable local, state, and federal laws and regulations.

4. Flush the fuel tank with running hot water for at least five minutes. Pour the water out of the fuel sender assembly opening. Rock the tank in order to ensure that the removal of the water from the tank is complete.
5. Disconnect the fuel feed line from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service Service and Repair.
6. Remove the fuel rail and injectors. Refer to Fuel Injection Fuel Rail Assembly Replacement Service and Repair.
7. Use compressed air in order to apply air pressure to the fuel lines in the opposite direction from the normal fuel flow.
8. Clean and inspect the fuel rail and injectors.

Installation Procedure

1. Install the fuel rail and injectors. Refer to Fuel Injection Fuel Rail Assembly Replacement Service and Repair.
2. Install the fuel pump module. Refer to Fuel Tank Module Replacement Service and Repair.
3. Connect the fuel feed line to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service Service and Repair.