Re: fuel filter connectors...what are these things?
If the 93 is like the 94, using the Motorcraft FG-872 filter, then the connectors are "Push Connect" type. They have a metal safety clip, that you pull back part way. But sometimes people take the clips off all the way, and don't put them back on. The fitting requires a simple tool to release, as mentioned above, like the KD 3321 Quick Disconnect tool. Its metal, sort of like a scissors with pipe-like pieces on each end. Close it around the filter tube, then push it into the fitting to release the internal locking fingers, then pull on hose while pushing more on the tool. Should come off easy. Don't bother with the little plastic slip-on ring type tools, they won't fit in next to the filter. If instead it uses the FG-800A style filter, like used on lots of older Fords, then no tool is needed, just follow the directions that Technoman said.