How to Fix a Running Toilet

Do you have a constant or intermittently running toilet? Let's troubleshoot this and get it fixed. If your toilet keeps running, there are a couple of potential issues your toilet may have. 


The first, and most common, is a leaky flapper. Different parts of the country deal with different types of water. From harsh municipality chemicals to well water, all wreak havoc on the life of a toilet flapper. The most common, and quickest fix is to replace your leaking toilet flapper. 


The second most common cause is due to a malfunctioning fill valve. If your fill valve has an external float, the build-up can cause the float to stick and prevent your fill valve from turning off or on. 

Does this describe your toilet issue?

Step 1: Test the Flush Handle

The flush lever is the first thing we'll check. It's rare, but it's essential to ensure it works correctly. Here's what to do:


1. See if the lever is sticking and needs to be replaced.

2. Check if the chain is getting caught, preventing the flapper from closing.

How to Replace

1. Get a replacement part that fits your toilet. Check out our Korky Levers to find the right one.

2. Ensure the chain is attached correctly to the flush lever and the flapper.

3. Adjust the chain length if needed so it's not too loose or tangled.

4. Ensure the chain is free from tangles or snags that could stop the flapper from closing tightly.

5. If the chain is damaged, rusty, or broken, put on a new one.

6. Flush the toilet and check if the flapper closes tightly, stopping water from escaping.

Step 2: Test the Flapper

Step 3: Test the Fill Valve

How to fix a running toilet