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Author:
Fixingme (LA)
I have been trying to stop a toilet tank from leaking into the bowl. It is a Gerber and I also tried a Corona. It is in an upstairs bathroom. I have installed 4 different new flush valves. I have tried six different flappers. When I put the tank on an outside bench and watch it there is no leak. After I install it there is a very slow leak. I read on this site that the tube into the overflow may be too long causing the water to siphon. The tank emptied. If it was siphoning it would not all leak out. I tried a flapper-less flush valve from Home Depot and it also leaked. Any suggestions other than replacing the toilet?
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Author:
KCRoto (MO)
Use the air gap included with the fill valve to stop the siphoning. If you don't have leaks on the workbench, it isn't 'leaking' when installed.
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Author:
hj (AZ)
If it is siphoning it the water level will only drop to the level of the end of the tube. Since we NEVER have that problem, all we can say is that you are doing something wrong, and a new toilet is a Draconian solution.
Edited 1 times.
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Author:
KCRoto (MO)
water can draw from the bottom of a fluidmaster and run continuously as the fill valve keeps the tank topped off if someone shoved the entire tube down the overflow. If the air gap is installed, it can't start the siphon.
Edited 1 times.
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Author:
Paul48 (CT)
It sounds as though something is causing the flush valve seat to distort when assembled to the bowl. At this point, the only common denominator is the bowl, or a little fact not revealed to us. Check the opening to the bowl for inconsistencies, high points, low points etc. The tank is not hitting the wall when assembling, correct?
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Author:
hi (TX)
Sometimes the flush valve can be cracked allowing a leak, especially if you have a new flush valve.
What kind of flapper are you installing
A flapper with a ring around it to fit on the overflow tube can sometines be up too high making a leak between the flapper and the seat of the flush valve near the overflow tube.
I like the flapper with "ears" better because then you know where it is supposed to be as far as height and rotation.
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