walt_pittsburgh
DIY Retired Member
This was installed a few years ago and has been fine until recently. I have the float to fill to around 1" below the top of the fill tube when it will shut off, but after an hour or so, (it must run very slowly) it will increase the water level right to the top of the tube or just below the top (1/16" or so). It would appear I am leaking somewhere. I tried cleaning the flapper to no avail. I also did the food coloring test, with very faint indication of a seeping. What bothers me is why does it seek a new level after the valve first shuts off. Is this related to a bad fill valve?