Hi all,
Leaky toilet. Leaks water from the tank into the bowl. Have replaced the ballcock, and have been through two flappers now. Scrubbed the bottom of both flappers (one had mineral deposits, one was new) and the bottom of the drain that the flapper rests on; said drain feels smooth to my fingers and doesn't appear to have any chips or holes in it.
If I drain the tank by leaving the flapper open and the water off, no leak. As soon as I close the flapper, even with a tiny bit of water, leak.
I believe the culprit is the seal between the flapper and the drain below, but I cannot see how or why (new flapper and drain edge does not appear to be damaged).
Only other thing I can think of is there is a hole or chip in the overflow tube way down below, near where the lowest water level would be.
Even if I press down firmly on the closed flapper (effectively pushing it into the drain hole, closing it as hard as I can), there is still just the ever-so-slightest dripping of water.
End result is that, after about ten minute, the tank is completely empty of water and flushing requires two flips of the handle.
Any advice?