I found a part while searching google for just such a tool.
Part number is J-44321-6
I think it is for a Titan, but hopefully someone can clarify, because not only do we want the right part, that dang thing is $50
So What is need here is some way to get a "female" quick connection to make a fuel pressure check hose.
However it just dawned on me ...
2.5 Altima (not sure about sentra) has a fairly short line from the firewall to the fuel rail connection. I had a rubber hose and hose clamp on the male end of the firewall line when I was trying to fiddle with the quick connect. Rather than trying to connect to the quick connect, pull the whole line and use another rubber hose and hose clamp with the t fitting in the middle.
Not as cool as this http://www.nissanclub.com/forums/200...ml#post4123334
but will get the job done.
Be sure to use fuel line rated for fuel injection pressures.