Fuel System Cleaning

Special Tools

• J 34730-1A  Fuel Pressure Gage
• J 37088-A  Fuel Line Disconnect Tool Set

WARNING: Refer to Battery Disconnect Warning .
1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (With CH 48027)  or Fuel Pressure Relief (Without CH 48027) .
3. Drain the fuel tanks. Refer to Fuel Tank Draining .
4. Remove the fuel tanks.
5. Remove the fuel tank modules. Refer to Fuel Tank Fuel Pump Module Replacement - Left Side  and Fuel Tank Fuel Pump Module Replacement - Right Side .
6. Inspect the left fuel. Replace a contaminated strainer for the left fuel sender only, and inspect the fuel pump.
7. Inspect the left fuel sender fuel pump inlet for debris. Replace the left fuel sender assembly if you find debris in the fuel pump inlet.
8. Inspect the right fuel sender strainers. Replace the right fuel sender assembly if you find a contaminated strainer. The right fuel sender strainers are not serviced separately.
NOTE: When flushing the fuel tanks, handle the fuel and water mixture as a hazardous material. Handle the fuel and water mixture in accordance with all applicable local, state, and federal laws and regulations.
9. Flush the fuel tanks with hot water.
10. Pour the water out of the fuel sender assembly openings. Rock the tanks to be sure that removal of the water from the tanks is complete.
11. Install the fuel sender assemblies.
12. Install the fuel tanks.
13. Refill the fuel system.
14. Install the fuel filler cap.
15. Connect the negative battery cable.
16. Perform the following procedure in order to inspect for leaks:
    1. Turn the ignition switch ON for 2 seconds.
    2. Turn the ignition switch OFF for 10 seconds.
    3. Turn the ignition switch ON.
    4. Inspect for fuel leaks.
17. Program the transmitters. Refer to Transmitter Programming (N. America and Japan, except Canada) or Transmitter Programming (Canada and Europe) or Transmitter Programming (New RCDLRs ONLY) .