OEM 2007 Ford Fusion Fuel Rail

2007 Ford Fusion Fuel Rail Parts Questions & Experts Answers

• Q: What are the crucial steps to safely service the fuel rail and ensure proper installation on 2007 Ford Fusion?

  A: All fuel rail service operations should happen in zones free of both smoking and any open flames because of highly flammable mixtures that represent a serious personal injury risk. The high pressure maintained by the fuel system after engine shutdown demands that technicians first remove pressure from all fuel tubes before they start disconnecting any components of the system. Start the process by emptying fuel system pressure then removing the battery cable. Disassemble by first taking off the upper intake manifold then cutting the quick connect coupling from the fuel rail of the tube. The technician should begin by disconnecting the engine coolant temperature (ECT) sensor electrical connector followed by removing the two wire harness retainers from the left-hand side of the left valve cover stud bolts. The next step includes disconnecting the six fuel injector electrical connectors before removing the two pin-type retainers from the wiring harness cover. The assembly procedure starts by removing four fuel rail bolts followed by extracting the fuel rail together with the injectors as one piece before disposing of the twelve fuel injector O-ring seals. To install these components new O-ring seals manufactured from fuel-resistant special material should be used because regular O-rings may leak; avoid reusing the old seals. Clean engine oil enables successful installation of the six fuel injectors and their clips onto the fuel rail after sealing the O-ring with lubrication. Fasten the fuel rail and injectors back within their assembly using four fuel rail bolts which need tightness at 10 Nm (89 lb-in). The installation process requires first fixing the wiring harness cover and two pin-type retainers while reattaching the six fuel injector electrical connectors and finally placing the two wire harness retainers on the left valve cover stud bolts. Its next to install the battery ground cable after securing the upper intake manifold and restoring the fuel rail fuel tube quick connect coupling along with the ECT sensor electrical connector.