Fuel System Cleaning
- Disconnect the negative battery cable.
- Relieve fuel system pressure. Refer to Fuel Pressure Relief Procedure .
- Drain fuel tank. Refer to Fuel Tank Draining Procedure .
- Remove the fuel tank. Refer to Fuel Tank Replacement (Cutaway Van Side Tank) or Fuel Tank Replacement (Passenger/Cargo Van) or Fuel Tank Replacement (Cutaway Van Rear Tank) .
- Remove the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
- 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 ensure that removal of the water from the tank is complete.
- Inspect the fuel filter for contamination.
- Replace the fuel filter if the filter is plugged. Refer to Fuel Filter Replacement (Passenger/Cargo Van) or Fuel Filter Replacement (Cutaway Van) .
- Clean the fuel lines 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 .
- Install the fuel tank. Refer to Fuel Tank Replacement (Cutaway Van Side Tank) or Fuel Tank Replacement (Passenger/Cargo Van) or Fuel Tank Replacement (Cutaway Van Rear Tank) .
- 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.