Why does my toilet randomly run for a couple seconds?
Why does my toilet randomly run for a couple seconds?
Your toilet randomly runs on and off for a few seconds due to a problem called “phantom flush”. This is caused by a slow water leak from the tank into the bowl and is often the result of a sediment build-up on the flapper (aka “flush valve seal”) or a bad flapper seat.
Why does my toilet just randomly start running?
A toilet that cuts on and off by itself, or runs intermittently, has a problem that plumbers call a "phantom flush." The cause is a very slow leak from the tank into the bowl. This problem is almost certainly caused by a bad flapper or flapper seat.Aug 19, 2021