what is this

[hotrod72]

This is on the fuel rail of a 98 4cyl. The vacuum hose goes nowhere .I don't no what it is or what it was suppose to hook to. Thought it was a regulator but book said that was on the tank . Any help???

 

[wwch99tj]

Take a broader picture to show where the hose starts, but I think this is it...
Hooks to the side of thy TB

Sent from my DROID 2 Global

 

[SteelHeadz]

The fuel rail supplies the necessary fuel to each individual fuel injector and is mounted to the intake manifold . On the 2.5L engine, a fuel damper is located at the front of the fuel rail .The damper is used only to help control fuel pressure pulses from the fuel pump. 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 in this group for information.
Two different types of dampers are used. The first type is equipped with a vacuum fitting. A vent line connects this vacuum fitting to the intake manifold. This vent line has no control over fuel system pressure. The second type of damper will not have a vacuum fitting or vent line.