It is necessary to stay away from smoking and utilize any open flames near fuel components because highly flammable mixtures present a risk of personal injury during fuel rail servicing operations. Before removing any fuel lines or components from the high-pressure fuel system it becomes necessary to first reduce fuel system pressure. Start the process by breaking free the spring lock coupling from the fuel rail before taking out the upper intake manifold. After disconnecting all electrical connections from the fuel rail pressure sensor the vacuum system one should proceed to remove the six
Fuel Injector electrical connectors. Pull off the wire tie then release the wiring harness retainers from the front of the fuel rail. Proceed by loosening four bolts fastening the fuel rail and injectors and then tighten them to 10 Nm (89 lb-in) when reinstalling the assembly. Using clean engine oil to lubricate the O-ring seals and discarding the old ones is necessary before performing the installation procedure in reverse order.