The water flows through the machine with all the pressure the house hose provides. That was my first thought too so I checked it all out and took it apart and blew air through it. There was some hard water deposits in the joints of the wand so I guess I'll be learning what is inside the pump here pretty soon. I took the three plugs and the unloader(
#27 ON THIS PDF ) valve out and saw more crusty white crud, but I hate to continue without the rebuild parts on hand.
