float
A chain that is too tight or tangled
Water entering the overflow tube because the tank is overfilling
These problems allowwater to move through the toilet when it should have stopped.
A piece of aluminum foil cannot restore a worn rubber seal or repair a faulty valve.
How to Check for a Toilet Leak
If you suspect a leak, try this simple test.
Remove the toilet tank lid carefully and look for water continually flowing into the overflow tube.
Listen for occasional refilling when nobody has used the toilet.
