We're getting ready to go home and want to empty the tanks. The black water won't empty when the valve is pulled. It is 2/3 full and I'm not sure why it won't go. We do have a black water flush so I'm not sure if I'm doing something wrong. Help!
Does it feel like it's sliding open the valve? Try opening and closing a bunch of times and see if it cuts loose. Maybe the valve stem is not attached properly?
Figured it out! I have a second valve on the other side of the camper behind the entry stairs. Once I pulled it and then pulled the main one it all worked. I'm learning!