If you just can't find a flapper that seals, consider replacing the entire toilet overflow tube/flapper. On most toilets (two-piece), this means removing the tank.

There are three likely culprits that can cause a toilet to run continuously — the float, flapper, or fill valve. Luckily, each is easy to replace.

Learn how to replace a toilet flapper, which can wear out over time and lead to leaks, constantly running water, and faulty flush mechanisms.

The toilet is running because either water is running in the toilet or water is running out. You need to replace the fill valve and/or the flapper.

The height of the float should be enough that the tank flushes the bowl with water when you flush the toilet, but not so high that it allows water to run down the overflow tube.

If the above fixes don’t work, you may need to replace your toilet’s fill valve, typically located to the left of the overflow tube. It can become dirty or brittle over time, and may need ...