DON'T buy one of those pumps from Harbor Freight! That is one of the items they have that would be a rip-off if they were giving them away free! I bought one of the junky things and it only worked for a few minutes then just simply quit pumping, when I took it apart to see what was wrong the problem was obvious. The piston was waaaaay too small for the bore, so small in fact that the seal just barely touched the walls of the bore all the way around so they had packed the dang thing with heavy grease to make it seal. As soon as the grease was dissolved, which will occur with almost anything you might pump except water, it would quit working completely. I would say it quit sucking but that dang thing sucks big time, just in the wrong manner!
