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Blue74 · 10-22-2008, 07:38 AM

I get a bad odor of sewer gas when I open the lid on my toilet only. I do not smell it other wise. It holds water and does not drain down even for several weeks. There is no visible leaking around the base of water. I did pick up a seal kit for the base but I have not taken the time to install it because I did not know if it would take care of the problem. Is that where the gas is leaking by? Other ideas?

Thanks Paul

Blue74 · 10-22-2008, 07:38 AM

I get a bad odor of sewer gas when I open the lid on my toilet only. I do not smell it other wise. It holds water and does not drain down even for several weeks. There is no visible leaking around the base of water. I did pick up a seal kit for the base but I have not taken the time to install it because I did not know if it would take care of the problem. Is that where the gas is leaking by? Other ideas?

Thanks Paul

Joe-K · 10-22-2008, 09:17 AM

Paul,

Since the bowl holds water, it doesn't sound like the odor is coming up through the toilet bowl itself, but it could be coming through the overflow tube

Most RV toilets have some means of a overflow drain which is usually a small tube that runs from the top of the bowl area (usually near where the water enters the bowl) directly to the black tank. This tube allows the water to enter the black tank rather than overflow the bowl if the fill valve should leak and overfill the bowl.

Usually some water is supposed to go down this overflow tube whenever the toilet is flushed which keeps some water in the tube and prevents odor from traveling up through it.

Try looking for that tube and pouring water directly into it. It's possible that the tube is empty and you are getting odor throu it.