What makes the toilet flapper close?
My toilet flapper stays up. I replaced the flapper and it fits well once I poke it down as did the old one, but the new one also stays up. The chain is loose enough. We have hard water but there doesn't seem to be any residue on the little pegs the flapper attaches to.
I assume the next step would be to replace the whole tube and flapper? Do I have to take the tank off or does the tube just screw down? Still I am curious what makes the flapper close when it works properly.
Also what is the lifespan of your average toilet? Mine (3) are all 42 years old.