KenM
Veteran Member
Attached picture is my primary fuel filter. Want to add a vacuum gauge to the system.... This filter has ONE inlet (#2 in the pic) and 2 outlets (#1 and #3) #3 goes to the engine, #1 has a plug in it. If I add the vacuum gauge to #1, which would be most convenient, would that work to show vacuum in the line. In other words is it an unrestricted passage from #1 to #3. If so, I would think that would be a good solution to mounting a vacuum gauge to my system. See attached picture
