How might one go about checking the fuel pressure?? Do you check it at the fuel rail where you can release the pressure......it looks like a air valve thing?? I guess tire pressure gage is out of the question............I know that my fuel pump had been humming like crazy for quite a while, but I figured b4 I worried about replacing it, I would check the pressure.......... :?

You'll need a "master" gauge! It will just screw onto that fitting.