Join Date: Jan 2014
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The fuel line your referring to requires a special tool to remove it. If you look at E bay under 6.0 fuel pumps you will see the type of end the hard fuel line has on it. Inside the hose fitting end are three metal prongs that slide over and snap inside the wider metal part on the hard pipe.
You can purchase the special tool that slides between the hose fitting and the metal pipe to push the three prongs away from the hard pipe and slide the fitting off. The metal keeper that you see on the side of the hose end just slides first toward the metal pipe and then out of the way.
I was able to make a "special tool" out of the end of a unused caulk tube tip. The ID is just about the same as the hard pipe and you cut a length of about 1/2" and then cut a slit down the middle so you can slide it over the metal pipe. It should slide inside the metal hose end and disengauge the metal prongs. Once there, you should be able to slide the hose off the metal hard pipe.
Good luck. Wear eye protection. It may have some pressure in it.