Originally Posted by pondlady
Try swapping out the rubber O ring inside the hose end.
I was using the water pump, and pumping water from the holding tank. I didn't have a city water connection. So what was happening instead of coming out of the faucets like it should of it was not even coming to the inside plumbing at all instead it was coming from the pump bypassing the inside plumbing and just reversing itself and going right back out through the city water connection. I guess I would call this a reverse action of water.
I did use the pump already this season and never had a problem. The last couple of times I have had a city water connection and this was the second time this season that I needed the pump for fresh water.