DIY Guide: How to Fix a Running Toilet and Other Common Flush Problems

DIY Guide: How to Fix a Running Toilet and Other Common Flush Problems


Having a running toilet can be a real nuisance and can lead to water wastage and high utility bills. In this DIY guide, we will walk you through step-by-step instructions on how to fix a running toilet and other common flush problems. So, roll up your sleeves and let’s get started!

Materials You Will Need

  • Adjustable wrench
  • Plastic gloves
  • Toilet flapper kit
  • Toilet fill valve kit
  • Bucket
  • Rag

Step 1: Identify the Problem

The first step in fixing a running toilet is to identify the root cause of the issue. Common problems include a faulty flapper, a worn-out fill valve, or a loose handle. Take a look inside the toilet tank and see if you can spot any obvious issues.

Step 2: Replace the Flapper

One of the most common reasons for a running toilet is a worn-out flapper. To replace the flapper, turn off the water supply to the toilet, flush to drain the tank, and then remove the old flapper. Install the new flapper according to the manufacturer’s instructions.

Step 3: Install a New Fill Valve

If the flapper replacement doesn’t solve the issue, the fill valve might be the culprit. Turn off the water supply, remove the old fill valve, and install the new one. Make sure to adjust the float to the appropriate water level.

Step 4: Check the Flush Handle

If the toilet is still running, check the flush handle for any loose connections or issues. Tighten any loose parts or consider replacing the handle if necessary.

Step 5: Test the Toilet

Once you have replaced the flapper, fill valve, and checked the flush handle, turn the water supply back on and test the toilet. Flush several times to ensure the issue is resolved and there are no leaks.


By following these simple steps, you can easily fix a running toilet and other common flush problems on your own. Remember that regular maintenance and timely repairs can help you save money on water bills and prevent further damage to your toilet. Happy DIY fixing!

For more DIY home improvement tips and tricks, stay tuned to our blog!

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