Cleaning

1. Remove the cabin heater fuel line.
2. With the cabin heater fuel line removed from the vehicle, place a shop cloth on the fuel tank end of the fuel line to catch any residue, then apply a small amount of air pressure to the other end of the fuel line.
3. Check to see if air pressure is coming from the tank end of the line. If pressure is flowing unrestricted the line is clean.
4. If the fuel line shows any signs of being restricted after air pressure is applied, the fuel line should be replaced.
5. Install the cabin heater fuel line.
6. Verify function of the cabin heater.