Stinky water in bathroom sink

Old Blue wrote:
Goldencrazy
No more problems, seems to have been the problem, clean pipes.
Bill

Old Blue.....think Goldencrazy was asking OP (pigfarmer) if problem was fixed or if just living with it.

HEY OP........
Did you find the smell......or just living with it :H

IS/WAS it the water (grab some in a glass........walk out of room and sniff it)

OR is smell coming back up sink drain cause water flowing down drain is stirring it up

Goldencrazy
No more problems, seems to have been the problem, clean pipes.
Bill

I am curious. Did it get fixed or are you living with the smell.

When we had that problem, I knew it was the water, but it was the drain. The drain has a slight angle to it and was just not enough to remove stuff. Took the drain, p-trap, vent, pipe etc. out and cleaned all of the parts, no more problems, at least for us, maybe this will help.
Bill

pigfarmer wrote:
You can't take the fisherman: We were on an extended, 6 month + road trip living in the coach.

I repeat my advice. If you haven't flushed out the outside shower (or any other lines that haven't been used for a while) try it. You have nothing to lose..and you may be pleasantly surprised!!

That varies. The bathroom sink in my RV drains into the black tank. I am glad it does. If I need to add water to the black tank to get enough for a good tank dump, I can just turn on the bathroom sink's tap.

The kitchen sink and shower are all that go into my gray tank.

rgatijnel1: The sinks do not drain into the black tank. They drain into the grey water tank. If that were so the black tank would have to be dumped daily.

rgatijnet1 wrote:
A bad air admittance vent valve is usually failed open and the smell will be there all of the time, not just when he is running the water. If it fails closed, there will be no smell and the sink will drain slow.

Not quite. What the AAV is for is to break a vacuum.

When running water into the sink, the water is flowing through (filling up) the drain. When you turn off the water, the flowing water keeps flowing, pulling a vacuum behind it that will pull the water out of the P trap. The AAV breaks that vacuum so the water is not pulled out of the P trap.

If the AAV fails closed, the sink will drain at the usual speed because it is being vented by the sink drain (itself). But it will leave the trap empty because that is now the only vent. That lets holding tank odors come up.

Here is a Youtube video that shows how that works. And what happens if it fails closed. (This is an ad for a brand of AAV, but the first 30 seconds shows the principles.)

You can't take the fisherman: We were on an extended, 6 month + road trip living in the coach.

John and Joey That was the first thing I cleaned. There was nothing on it to clean off but thanks for the reply.