Fuel Delivery and Air Induction: Service and Repair

FUEL SYSTEM CLEANING

IMPORTANT:
- If a fuel system problem is caused by contaminated fuel or other foreign material in the fuel tank, the tank must be cleaned. If the tank is rusted or is still contaminated after cleaning, the tank must be replaced.
- Only use oil-free compressed air to blow out the fuel pipes.
- Inspect the fuel tank internally and clean the fuel tank if the you find a plugged fuel filter.

1. Disconnect the negative battery cable.

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.

2. Remove the fuel tank from the vehicle.
3. Remove the fuel sender assembly from the fuel tank.
4. Fill the fuel tank with hot water.

IMPORTANT: When flushing the fuel tank, 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.

5. Shake the fuel tank vigorously for 5 minutes.
6. Drain the fuel tank.
7. Inspect that all of the water is removed from the fuel tank.

IMPORTANT: If the inside of the fuel tank contains any traces of rust after cleaning, replace the fuel tank.

8. Install the fuel sender assembly to the fuel tank.
9. Install the fuel tank to the vehicle.
10. Refill the fuel tank.
11. Connect the negative battery cable.
12. Inspect for fuel leaks and repair as necessary.