Fuel System Cleaning
- Disconnect the negative battery cable.
- Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure .
- Drain the fuel tank. Refer to Fuel Tank Draining Procedure (2-Door Utility) .
- Remove the fuel tank. Refer to Fuel Tank Replacement (2-Door Utility) or Fuel Tank Replacement (4-Door Utility) .
- Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement (Utility/Crew Cab) .
- Inspect the fuel strainer. Replace a contaminated strainer and inspect the fuel pump.
- Inspect the fuel pump inlet for dirt and debris. Replace the fuel pump if you find dirt or debris in the fuel pump inlet.
- Flush the fuel tank with hot water.
- Pour the water out of the fuel sender assembly opening.
- Rock the tank to be sure that removal of the water from the tank is complete.
- Inspect the in-line fuel filter for contamination.
- Replace the fuel filter if the filter is plugged. Refer to Fuel Filter Replacement .
- Clean the fuel pipes by applying air pressure in the opposite direction of the fuel flow.
- Install the fuel sender assembly with a new seal into the fuel tank. Refer to Fuel Sender Assembly Replacement (Utility/Crew Cab) .
- Install the fuel tank. Refer to Fuel Tank Replacement (2-Door Utility) or Fuel Tank Replacement (4-Door Utility) .
- Refill the fuel tank.
- Install the fuel filler cap.
- Connect the negative battery cable.
- Inspect for leaks.
- Turn ON the ignition for 2 seconds.
- Turn OFF the ignition for 10 seconds.
- Turn ON the ignition.
- Inspect for fuel leaks.
CAUTION:
Refer to Battery Disconnect Caution in Cautions and Notices.
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.
IMPORTANT:
Only use oil free compressed air to blow out the fuel pipes.