If you also used the little tube to suck the pink antifreeze into the system, you shold check to see if the valve that goes to that hose in closed. I have a new to me coach and it was winterized by the dealer. They left the valve open. The water system was ok if I was on city water, but as soon as I tried using the water from the holding tank the pump kept cycling and water flow was sporatic at best
. Im just saying..............