Fuel System Cleaning Procedures

Vehicle Fuel Pipes:

Engine Compartment Fuel Pipes:

Fuel Vapor Pipes:

Important
^ Only use oil free compressed air to blow out fuel pipes.
^ If the in-line fuel filter is plugged, the fuel tank should be inspected internally and cleaned if necessary.

Fuel Tank

1. Disconnect negative battery cable.
2. Relieve fuel system pressure (see "Fuel System Pressure Relief").
3. Drain fuel tank (see "Draining Fuel Tank").
4. Remove fuel tank (see "Fuel Tank Replacement").
5. Remove fuel sender assembly (see "Fuel Sender Assembly Replacement").

Inspect
^ Whenever the fuel tank is cleaned, the fuel pump strainer must be inspected. If strainer is contaminated, it must be replaced and the fuel pump must be inspected.
^ Fuel pump inlet for dirt and debris. If found, fuel pump should be replaced.

6. Flush fuel tank with hot water.

Important: When flushing 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 applicable local, state and federal laws and regulations.

7. Pour water out of fuel sender assembly opening (rock tank to be sure that removal of water from tank is complete).
8. Install fuel sender assembly (see "Fuel Sender Assembly Replacement").
9. Install fuel tank (see "Fuel Tank Replacement").
10. Add fuel and install fuel filler cap.
11. Reconnect negative battery cable.

Inspect
^ Turn ignition switch to "ON" position for two seconds, then turn to "OFF" for ten seconds. Again turn to "ON" position and check for fuel leaks.