Fuel Rail: Description and Operation

Fig.18 Fuel Rail/Fuel Damper:

The fuel rail is mounted to the intake manifold (Fig. 18). It is used to mount the fuel injectors to the engine. On this 6-cylinder engine, a fuel damper is located near the center of the fuel rail (Fig. 18).

The fuel injector rail supplies the necessary fuel to each individual fuel injector.

The fuel damper is used only to help control fuel pressure pulsations. These pulsations are the result of the firing of the fuel injectors. It is not used as a fuel pressure regulator. The fuel pressure regulator is not mounted to the fuel rail on any engine. It is located on the fuel tank mounted fuel pump module. Refer to Fuel Filter/Fuel Pressure Regulator for information.
Fuel Pressure Regulator

The fuel rail is not repairable.