I've recently gotten a fuel pressure gauge and the one and only thing im confused about is how to hook it up to my fuel lines/rail. Ive seen people take out their schrader valve core and tap into that. Is there any logic to that or is there anywhere else i can hook this pressure sending unit? Its not a wet gauge so theres no fuel going to it. Its similar to the oil pressure sending unit. I just dont know where to tap into. If you have an answer pictures would sure help

 

The shrader valve is the only reasonable place to connect a pressure gage, that is what it is there for. However you will need to cobble up some plumbing to connect it to the sending unit, as I don't believe there is enough room to attach it directly. Good thing you got a dry gage as it is not the smartest thing to bring fuel lines into the passenger compartment.

 

Ha yeah. Ive been doing some research and it seems that people have gotten a swivel 90degree adapter and ran a steel braided line to wherever their mounting location was.