OEM 2002 Buick Regal Fuel Rail

2002 Buick Regal Fuel Rail Parts and Q&A

• Q: What precautions should be taken when servicing the fuel rail assembly to prevent contaminants from entering the fuel passages on 2002 Buick Regal?

  A: The Fuel Rail assembly requires protected fuel passages which demands fitting caps and hole plugs during servicing and clean fuel system component handling. The first step requires the user to drain pressure from the fuel system. Begin by cleaning all connections on the Fuel Rail assembly before proceeding to remove the fuel feed and return pipes from the Fuel Rail tubes before taking off the vacuum line from the Fuel Pressure Regulator. The proper order for removing the Fuel Rail is first disconnect wires from the ignition coils along with the 6 injector electrical connectors after which the technician can remove the Fuel Rail hold-down bolts. Relaxation of pressure in the fuel system must occur before gently dismounting the Fuel Rail while applying equal force to both its sides. The installation procedure includes replacing all serviced components o-rings before applying clean motor oil to fuel injector o-rings and then carefully placing the Fuel Rail assembly onto the Intake Manifold while seating each fuel injector manually. Secure the Fuel Rail hold-down bolts by torquing them to 10 n.m (89 lb in). Connect the vacuum line to the Fuel Pressure Regulator and the ignition coil wires to their respective places while also securing the 6 fuel injector electrical connectors and the fuel feed and return pipes to the Fuel Rail tubes. Begin by tightening the fuel fill cap followed by Battery Cable reconnection after which you should inspect for leaks using a two-second ignition on then ten-second ignition off before applying power again to check for fuel leakage. The last installation task entails fitting the fuel injection sight shield.