You're not going to have a lot of luck with a solder sucker on a surface mount cap. A very basic 25W or so soldering iron should be plenty. Two of them would offer to heat each end and effortlessly pick up the part but you can do it with one, "teasing" up each end a bit at a time. Two things to remember - you don't care how much you abuse the part you're removing (it's bad already), and you care very much about collateral damage to the board and surrounding parts. So slow and careful, you don't want to make any extra work for yourself. Once the part is removed, clean the pads off with solder wick. Use a Q tip or small brush and alcohol to clean the flux off the board, then place and solder the new part down one end at a time. Clean the area with alcohol again and you're done.
Mark K5LXP
Albuquerque, NM