Fuel pressure regulator

[millermilla]

Hiya,

Ive noticed my fuel pressure regulator on the end of the fuel rail is missing it's vacum pipe. I take it the vacum pipe would come directly from the inlet manifold but I cant find it anywhere. I can see where the pipe joins for the servo but nothing for the regulator. Could someone take a look and let me know. (4.2 AJP V8)

Thanks

[GreenV8S]

I gather from previous discussions on PH that this is normal and correct. Standard fuel pressure regulators are usually referenced against manifold pressure via a vacuum line, but TVR use a constant fuel pressure in this car so the vac port on the fuel pressure regulator is left open to the atmosphere.