Fuel Rail: Description and Operation

Fuel Injectors And Rail Assembly:

The fuel rail is a steel distribution pipe with mounting points for the fuel pressure regulator, 6 fuel injectors, and injector wire harness.

The fuel rail performs the dual functions of fuel supply to the injection components, and providing the necessary brackets and fittings to mount the components to the engine. Fuel enters the fuel rail at the inlet tube, proceeds to the 6 fuel injectors and fuel pressure regulator, and returns to the tank via the fuel return line. The fuel rail is under constant fuel pressure and fuel pressure release is required prior to servicing.