alexpincaExplorerJul 16, 2013Water pumpI have 2006 Keystone Sprinter 5th Wheel...I do very little dry camping...only rare occasions. I'm trying to figure out why I get a whine from my water pump when I'm hooked up to shore water and I'm r...Show More
tko9900ExplorerJul 16, 2013It's the check valve. Had same problem & bought a different brand check valve, noise gone.