stopped up sink.

[Lurch59]

I have a 2007 Montana Mountaineer fifth wheel. The sink will not drain and the problem lies between the p trap and the gray tank. How do I get this in plugged.

[cpaulsen]

A friend of ours had his galley tank plugged up......he took it to the shop and they found it was caked with old dish soap. He was using the cheapest dish soap he could find and they told him to use Dawn dish soap to stop that problem.

[BB_TX]

The regular Montanas have a separate galley tank for the kitchen sink if that is the sink you are talking about. The pull handle for my galley tank is just in front of the street side wheels. On some models it is between or behind the wheels. Look around and see if you have a galley tank pull handle.

[352]

Threaten your wife with a snake. She will then be glad to fix the plumbing.

[Old-Biscuit]

Bucket under 'P' trap.....remove it and clean it out

With it out....run snake down thru drain line into grey tank

[Kountryguy]

Try a snake.