Fuel Filter...

The fittings on either end aren't just push-on fittings, even though they look like that. There's a one-way spring in each one that catches on a ring on the filter tubing, and you need to open it up before it will come off the filter. Auto stores sell the tool, or you can make your own by making a metal or vinyl tubing sleeve that wraps around the fuel filter line, but fits inside the hose end. It needs to spread the spring apart and then the filter tubing just slides out.

Prolly goes without saying, but you've relieved the pressure already, right? wrap a rag around the fitting when you pull it off- there will be some residual fuel present.

the tool you'll need is called an A/C line disconnecting tool or fuel line disconnecting tool.

They are only 3 bucks at the store so just buy one for future use. most cars have them and they have two sizes that way you don't have to make one that will take your hours to fiddle with.

The tool will probably come with a number of white plastic, round fittings. Like stated above, it's an A/C line tool. It's tricky to get off, but also becareful of the gas in the line.

fooooool filter = alot of work to put in