If you are referring to the steel connector style (instead of the plastic clip like you would have on the back, which you can snap off with a screwdriver and replace with the ones supplied in the new filter package), there is a special tool required. It looks like a pair of scissors, and usually comes with 5/16 and 3/8 tube sizes on either end. Most auto parts stores carry it, and should know the tool if you ask them for %26quot;the special tool for Ford fuel filters%26quot;. Slip it over the filter end, slide it into the steel connector, wiggle and swear a bit, and eventually it will disconnect. They can be frustrating, but they eventually come loose. I promise.1997 ford ranger fuel filter?
ASE is right on. Here's an article showing the tool and the procedure for changing the filter. The article shows an F-150, but it's the same principle. Hope this helps.