I hope you can help me I have tried everything possible to fix my leak but nothing works !
Water is leaking into the bowl from the tank. I have replaced the entire flush valve and still have the problem. The funny thing is when I remove the tank put it on the bench and fill it with water it does not leak !!! Not from the flapper or the washer around the flapper not one drop. However when I put the tank back it leaks ! I have ensured the water level in the tank is one inch below the fill tube.
FYI The toilet is about 20 years old and does not have the ball cock system . It has a round plastic floating disc that closes off the water inlet when the arm attached to it reaches a certain height.
Frustrated in Ottawa Canada !!
P.S. I also have changed the flapper twice as I the first repair I decided on was just changing the flapper. When the problem persisted I changed the entire flush valve.