Black Tank Flush Problem

[nickeaton]

I have a 2008 Montana 2955RL. When I hook up fresh water to the black tank flush and turn on the water I'm getting water running out the base of the area where the side wall and floor meet. Any suggestions on what the problem is?

[1retired06]

Flush valve or crack in the line would be where I would start. That valve would be my first guess. If the leak is outside ((was not sure reading your post) inlet valve could also be a culprit. If OEM, both were cheap plastic

[BB_TX]

Failed black tank flush valves are common. When mine failed water ran out from under the wall (where the valve was located) and flooded the floor. Ended up simply eliminating the valve and using an external back flow preventer.

Do a search for black tank flush for multiple earlier discussions about it, some including pictures.

[DQDick]

Here's one link: http://www.montanaowners.com/forums/...erms=back,flow

[wjwheeler]

Welcome to the world of Montana.