F 150 Heritage 4WD Pickup V8-5.4L SOHC VIN Z Bi-fuel (2004)
6. Disconnect the ground and modular electrical connectors.
7. Disconnect the ground strap.
8. CAUTION: Do not reuse the copper washers; reuse may cause reduced sealing effectiveness and propane gas leaks.
Disconnect the fuel lines.
9. Disconnect the coolant hoses and one vacuum line.
