That is correct. I don't believe the Focus has a valve. You will need a kit that contains a "T" fitting for when you remove the fuel line and you install the T in line so that you can connect the gauge to it.
Most all test kits come with these adapters so clearly you just need one that fits the inlet line to the rail.
I attached a couple of pictures that show the tester and then the inlet line that you want to put the T in.
Let us know what questions you have. Thanks
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Saturday, September 12th, 2020 AT 1:41 PM