Hi, our toilet keeps filling itself up for a few seconds every few minutes. We`ve wedged the valve shut to stop it making the noise so we can sleep! and as you can see in the picture the water level drops right down.
I guess it`s leaking somewhere and when the level drops too low it fills itself up. There`s no sign of any leaks outside the toilet and the overflow is internal so it must be leaking into that somehow. Any ideas?
Just noticed you said that level "drops right down" which may alter my previous answer. Pic link doesn't work for me so can't see it. What level is the overflow (assuming its adjustable) set to. If its too low then you get exactly the same effect as the float being too high.