The toilet stopped flushing so I replaced the syphon with a new Opella multiflush. (the old one had a torn flap).
The new one worked fine for a few days & then would not flush again.? I again put in a new one (they are very cheap) and again it worked fine for a few days & now will not flush again. There is no visible damage to the one I took out but it will not work..any ideas???????