OEM Mercury Milan Fuel Rail

Mercury Milan Fuel Rail Parts and Q&A

• Fuel Rail
  6E5Z-9D280-BA
  Q: How to service the fuel rail safely and effectively on Mercury Milan?

  A:

  Service of the fuel rail must begin with safety precautions that prevent open flames or smoking near fuel components because extremely combustible mixture exists in these areas. Before working on the fuel system always lower pressure to stop fuel spraying and clean all fuel residues from the engine compartment until the car is running. All maintenance of the evaporative emission system and fuel components must start by first disconnecting the battery ground cable. Initiate the replacement by releasing fuel system pressure before discluding the battery ground cable from the system. The process starts by unfastening two nuts as well as the bolt and generator air inlet duct. The first task includes disconnecting the fuel tube-to-fuel rail quick connect coupling and removing the fuel rail insulator by detaching both wiring retainers. You need to disconnect all swirl control valve electric wires as well as all four Fuel Injector electric wires. Disconnect the fuel rail assembly by removing its two bolts. Take away the four fuel injector retainer clips together with the fuel injectors as well as the eight fuel injector O-ring seals. The installation requires new O-ring seals made of fuel-resistant material which should always be replaced instead of using reused old seals. Clean engine oil should be used for lubricating new O-ring seals before the fuel rail clips go back into position while the fuel injectors and their retainer clips get mounted onto the fuel rail. Fasten the fuel rail along with its injectors as a single unit by securing two fuel rail fasteners to 23 Nm (17 lb-ft). Install the four fuel injector electrical connectors together with the two swirl control valve electrical connectors. Note these installation procedures: Install the fuel rail insulator and attach the wiring harness retainers after which you should put on the fuel tube-to-fuel rail quick connect coupling. The generator air inlet duct can be installed and secured using the two nuts and bolt with a torque setting of 6 Nm (53 lb-in) and by reconnecting the battery ground cable.
• Fuel Rail
  5L8Z-9D280-AA
  Q: What precautions should be taken when servicing the fuel rail to ensure safety and proper installation on Mercury Milan?

  A:

  The risks for personal harm exist since servicing the fuel rail requires avoidance of open flames and smoking near fuel-related parts containing highly flammable mixtures. High pressure inside the fuel system remains present during engine idle so removing fuel system pressure before disconnecting fuel components is mandatory. The first step involves reducing fuel system pressure then unhooking the ground wire of the battery. Start by taking off the two nuts and the bolt as well as the generator air inlet duct. Remove the fuel rail insulator after detaching its two wiring retainers as well as disconnecting the fuel tube quick connect coupling from the fuel rail. You should start by disconnecting the two swirl control valve electrical connectors followed by vehicle Fuel Injector electrical connectors. You must remove both fuel rail bolts before extracting the fuel rail system with each fuel injector included. Discard all fuel injector retainer clips together with the fuel injectors after removing them from the engine block while discarding eight fuel injector O-ring seals. Installation requires new O-ring seals produced from fuel-resistant material while ordinary O-rings should not be reused because they might lead to leakages. Clean engine oil should be used for lubricating new O-ring seals before the fuel rail clips are properly seated for fuel injector and retainer clip installation into the fuel rail. Reinstall the fuel rail with the fuel injectors by threading in the two fuel rail bolts up to a torque of 23 Nm (17 lb-ft). Reinstall the four fuel injector electrical connectors together with the two swirl control valve electrical connectors. First attach the two wiring harness retainers to the fuel rail insulator followed by quick connecting the fuel tube coupling to the rail. Finish the repair by installing the generator air inlet duct along with its attached nuts and bolt while tightening them to 6 Nm (53 lb-in) then reattach the battery ground cable.