I have a 2006 Keystone Springdale 5th Wheel. After you flush the toilet, the bowl fills with water about 2 inches, right? Well, lately when I return to the toilet, the bowl is empty. Dry. Why? Is the seal bad or wearing out from flushing? What?

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Originally Posted by tmata

I have a 2006 Keystone Springdale 5th Wheel. After you flush the toilet, the bowl fills with water about 2 inches, right? Well, lately when I return to the toilet, the bowl is empty. Dry. Why? Is the seal bad or wearing out from flushing? what?

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Toilets don't "wear out" and a bad seal wouldn't lose water out of the bowl They can lose water out of the bowl through a couple of reasons. Since you left the bowl with water in it we can discount a vent problem.
That leaves two things. (1) Evaporation. How long did you leave it set? **or** (2) a crack in the bowl that lets the water drain out over time.
To check for this you must pull the toilet and set it up on saw horses, fill the bowl with water amd watch for leaks. There is a third but it's kind of off the wall. If there's a rag that's caught up in the throat it could possibly suck the water out of the bowl through capillary action. (told you it was "off da wall") Let me know what you find. Good luck, Tom