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Question DetailsAsked on 9/28/2013


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1 Answer


One of several things -

1) shutoff setting too high on float in tank, so it overflows over the top and the overflow tube in the back of the tank - if overflowing over the top into about 1 inch vertical tube near top of tank, adjust the float stop for slighly earlier shutooff - see youtube videos for how to adjust depending on type of float/valve you have

2) malfunctioning inlet valve - dirty or leaking seal - will be flowing directly from fill valve into tank, or through small tube into the overflow tube. Replacing is probably at the limit of a home-handy person who is not familiar with plumbing - doable but probably better to have done by somebody with experience while you watch to see if you are up to it next time

3) dirty or mis-seating flapper valve - the valve that closes the big (3" or so) drain hoel in bottom of tank that open when you flush, to let the water into the toilet bowl. Fairly easy to replace with kit if you are home handy - does NOT involve having to remove tank or any water-retaining fittings like the filler valve assembly does. First try wiping the seating surface in the tank and on the bottom of the valve - might just be scuzzy and leaking because of that.

Plumber cost to repair - typically about $100-150.

Answered 6 years ago by LCD

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