There is a toilet in the basement of our house that is having a problem. After flushing, the water level in the toilet bowl rises to a normal level and the tank fills with no problems. Then very slowly the water level in the bowl will drop until there is just a little bit of water at the very bottom.

Any ideas as to what is happening or how to fix it?

 

Check out the gasket that is under the "post" in the middle of the tank. sorry I cant get more technical but I'm just a brickee.

 

Do you have a sewege pump in your basement that turns on and off?
It may not be turning off. Or the vent thru the roof of the house is stopped up!

 

Sounds like it isn't properly vented and is causing a siphon that is lowering the water level in the trap.

Steve

 

Is someone drinking it?


Is there a trickle of water still going into the bowl?
Try bending the float so it shuts off the fill up a little later.

When flushed the water rushs down into the bowl and the momentum as well as the siphon effect is what has all the water run through, when the air is starting to get sucked through it stops the siphoning effect. So adjust the amount of water flow as to enhance the siphon effect and the resulting air suck breaking the siphon suction.

Changing the amount of flow will stop the continued siphoning of the water in the trap.

Not really explaining myself well here but I hope you get the idea..

 

I was thinking it might be the vent as well. But wouldn't the rest of the toilets in the house have the same problem if the vent was blocked?

 

Are we all that bored that we all jump on a toilet topic.....

 

No, I don't think anyone is drinking it.

There is no water trickling in from the tank.

All the internals are plastic (unlike the older ball float types) so I can't bend anything.

 

How well does the tub drain, as that would also be on the same drain and on the same main vent ( counting the overflow as a vent)?

 

your poo is to big

 

when it is that big it is a paralyzer......


Just had to...

 

If properply plumbed , each toilet will have it's own vent.


We prolly all jumped on this from experience and boredom

 

The tub drains fine.

 

I havew some plumbers over tommorow to set my new slab on grade installation bathtub. I will ask them if the puzzle is not solved. I'm an amature plumber so I'm out of ideas.

 

I will get up on the roof sometime this week or next weekend and take a look at the vents.