I just changed flapper inside the water tank hoping it would fix the
leak. I'm willing to change the valve mechanism because I don't like
the ball floats and the rusty twig that holds the ball. While I'm at
it should I also change the overflow pipe as well?
How else can water get into the bowl other than 1. through the flapper
drain 2. Over the overflow pipe?
"rusty twig" LOL
Avoid replacing the overflow; that can open a can of worms.
Check that water is not siphoning out the little refill tube
that empties into the overflow. If the end of the tube is
too far down the overflow this can happen.
Try shutting the supply valve and then add food coloring to
the tank water. If you see color entering the bowl, try to
stop the flow by pressing down on the (new) flapper.
The entire flush valve assembly (where the flapper sits)
*might* be leaking but that will usually result in water
on the floor.
The rim where the flapper sits when closed can become rough, causing the
flapper to leak. Feel it with your fingers. If it's rough, _gently_ smooth
it with an abrasive. Start with something like a sink scrubber.
If it's chipped, or you scratch it badly, you'll have to replace the stand
pipe. That requires removing the tank, so you might as well replace
everything that isn't porcelain.
I would change the overflow as a last resort. Not the hardest thing to do
but you do need to take the tank off the bowl. If you do change the overflow
make sure you replace the gasket between the tank and the bowl as well as
the bolts that hold the tank on.
One possible cause is that the replacement flapper does not fit quite
right. I had to exchange a flapper for one that cost a few pennies more
just to get a proper fit even though they were nominally the same. It
appears "they just don't make 'em like they used to".
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.