I am replacing the fuel pump - returnless - on a 99 SVT V6 Duratec.
The factory manual say disconnect fuel line by depressing clips to release line. I did that - the line is stuck I think. I pinched the black clip and slid the black clip toward the sending unit away from the fuel line going out and then pulled hard - nothing. Am I doing this wrong?

It seems the fuel line is retained by this clip but moving the clip off the line has no effect. Any suggestions?