Black tank odor coming from kitchen cabinet

[BuckeyeChuck]

I have a 2013 Sabre 33ckts. There is a black tank odor coming from the slide-out pantry. The pantry is located forward of the island. This pantry back wall is shared with the bathroom where the toilet is located. Any ideas of what might be causing this?

[Toddupton]

Do you have a vent under your sink?

[BuckeyeChuck]

Not that I can see.

[Mike Tav]

Your Air Admittance valve has failed. Probably somewhere in your island or sink area. Lowes has them for about $ 6. pick up a couple easy to change no tools needed, only hand tight. Find it and replace, your odor should go away.

[BuckeyeChuck]

Thanks for the reply. I'll check that out.

[BuckeyeChuck]

There is a valve unter the sink in the island. But I would think that that pipe would go to the grey tank not the black tank.

[lbrjet]

After a few years the grey tank smells really bad.

[BuckeyeChuck]

Yes it can!

[Mike Tav]

If you can locate that vent, replace it and see if it helps.

[BuckeyeChuck]

Thanks. I found one under the kitchen sink but I thinks that is for the grey tank. The order was comming from elsewhere.