<condor_222@yahoo.com> wrote: >I flush the toilet. The tank and bowl refill fine. [...] >Then I come back next time. And the bowl is almost empty! Sounds like you have a clogged vent stack somewhere in the house. When something else in the house drains (eg, a washing machine), it acts as a venturi pump. Normally it would pull air down the vent stack into the drain system but if that is blocked instead it pulls the standing water out of your toilet. Una

condor_222@yahoo.com wrote: > Hello, > > I have an older toilet. A few years ago, I > changed all the parts inside the tank. It > has worked fine since then. Until now. > > Lately, it has an odd pattern. I flush the > toilet. The tank and bowl refill fine. > I've watched them. > > Then I come back next time. And the bowl is > almost empty! > > And, it only seems to happen intermittently. > > It's really bizarre. > > Does anyone have any idea what might be causing this, You stuffed up the replacement of the parts. > and the solution? Get someone else to do a better job, or work out what you stuffed up. Looks like you managed to stuff up two different areas, the main stopper clearly allows the water to leak away, and for some reason the valve that is supposed to refill it when that happened isnt working properly either.

In article jwisnia@conversent.net says... > I'd think more likely it's a clogged vent stack and draining something > elsewhere in the house is "sucking" the water out of that toilet bowl. I had this happen but the vent stack wasn't clogged, rather the vent stack was being used as a roof drain. During heavy rains so much water went down the vent stack through the poop pipe that it would suck the water out of all toilets in the building. I fixed this by raising the vent stack so that rain water would drain through it any more.

<condor_222@yahoo.com> wrote in message news:1192892086.781796.225800@v29g2000prd.googlegroups.com... > Hello, > > I have an older toilet. A few years ago, I > changed all the parts inside the tank. It > has worked fine since then. Until now. > > Lately, it has an odd pattern. I flush the > toilet. The tank and bowl refill fine. > I've watched them. > > Then I come back next time. And the bowl is > almost empty! > > And, it only seems to happen intermittently. > > It's really bizarre. > > Does anyone have any idea what might be > causing this, and the solution? > > Thanks a lot! We have the same problem here... Mine is caused by a crack in teh bowl that allows water to seep through to teh drain (but not the floor thank God!) and go out slowly over the course of 4-6 hours... Sometimes it disappears but whenever we do a good cleaning, it reappears. We presume it is the "stuff" that either gets stuck in the crack or grows there... My neighbor had the same problem. theirs turned out to be a small piece of dental floss caught in the bowl drain that would not come loose (???) and acted like a candle wick allowing water to drip down the drain all day... I'm guessing that yours might be caused by item #1 above and that you shoudl pull the bowl to look for water leaking into the floor below the bowl ASAP lest you have rotting problems. -- Joe in Northern, NJ - V#8013-R Currently Riding The "Mother Ship" http://yunx.com/valk.htm Ride a motorcycle in or near NJ? http://tinyurl.com/5apkg Political Video: http://tinyurl.com/2v4avg

<condor_222@yahoo.com> wrote... > I closed the intake valve and went away for a few days. > > When I came back the water in the bowl was down once again. > But, the water in the tank had not moved. > > I live in a townhouse with a flat roof, > > Does it make sense that it would be vent pressure > sucking the water out? Yes, wind across the vent could do that.