Hello,
There is a valve in the fuel rail called a schrader valve. This is the valve to screw your fuel pressure gauge into if the coupling is a female one, or it can be unscrewed and the fuel pressure gauge screwed in place there if it is a threaded male coupler. You can also get brass connectors at your local hardware store for different mating situations. Please keep us informed as to how everything turns out.
Thanks,
Alex
2CarPros
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Monday, August 5th, 2019 AT 6:29 AM