Stock Fuel Pressure, what it should be and how to test, help?

[Trelisong]

I just got my fuel pressure banjo adapter bolt and hooked up a pressure gauge.

At idle my fuel pressure is showing 36-37 with the vacuum source attached to the regulator.

If I remove the vacuum line from the regulator then my fuel pressure goes up to 44.

I am under the assumption that a 2g is supposed to be at 43.5 PSI, however I am unsure if you are supposed to see this amount with or without the vacuum line attached.

 

[snowborder714]

Please search next time as the answer has been posted numerous times.

The fuel pressure for a 2g with the vacuum line disconnected is 43.5. Once you connect it, the pressure will drop. Your numbers sound fine.

 

[Trelisong]

First, Thank you for the response! exactly the information I was looking for.

Actually I did search for : fuel pressure

it returned 20 pages.... I started to scratch my head after reading through a couple pages and not finding my simple answer.

 

[dsmnightracer]

you are good!

 

[DSMunknown]

When vacuum line is connected, it should drop 1:1 with the manifold pressure, 1psi = 2inHG.

 

[97ebaygst]

I hoping someone can help me out how do u test the fuel pressure on a 2g gst?