Need help with Ford fuel system question

[Rice Eater]

I'm working on my dads 2005 Ford Freestar van 4.2L. I need to know where the fuel pressure test port is located on this van. I don't see it on the fuel rail like I would expect. There is a sort of stem coming off the rail on the front side below the EGR valve that has a mushroom shaped metal top on it, the top will turn but doesn't unscrew. I'm wondering if this covers the test port/shrader valve, and do you need one of the clamshell looking disconnect tools(which I don't have) to remove the cap? I have looked in a repair manual, done web search and used the repair giude on Autozones site, it appears in pics but is not identified. Any help would be greatly appreciated.

[Cordell]

Not sure what you are refering to, maybe you can take a pic?

 

Some cars don't have test ports, just FYI.

[Rice Eater]

Can take a pic tomorrow, I'll need to know how to be able to post it if you can point me in the right direction. As for now I have to go, 2am comes way to quick.

[Buckeye1647545503]

You may not have one avail may need to use adapters