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How to Fix a Toilet That Keeps Running

toilet


To resolve a toilet that runs continuously, you'll need to address the flapper valve within the tank. Either cleaning it or replacing it will help achieve a proper seal, thus stopping the water flow.

15-30 minutes
$5 - $15

Diagnosis

A toilet that won't stop running usually means the flapper valve inside the tank isn't creating a watertight seal. Over time, these flappers can degrade, warp, or collect debris, allowing water to continuously trickle from the tank into the bowl. This constant water loss is not only wasteful but can also significantly increase your utility expenses.

Tools Needed

  • Adjustable wrench
  • Screwdriver set
  • Bucket
  • Sponge or old towel
  • Replacement flapper (if needed)

Warnings

  • Before starting, ensure no one is using the toilet.
  • Be careful when handling the ceramic tank lid, as it can break easily.
  • If you need to adjust water supply lines, be aware of potential water spillage and have a bucket ready.

Step-by-Step Instructions

  1. Carefully lift the lid off the toilet tank and place it somewhere safe.
  2. Look inside the tank to check the water level and examine the flapper at the bottom.
  3. Inspect the flapper for signs of wear, warping, or any foreign particles.
  4. If the flapper appears intact, examine the chain linking it to the flush lever for any tangles or if it's too long or short.
  5. Adjust the chain so it has a slight bit of slack, but not so much that it's dangling loosely.
  6. Should the flapper be damaged, detach it from the overflow pipe and install a new one, making sure it creates a good seal.
  7. Clean off any mineral buildup or gunk from both the flapper and the surface it seals against (the flush valve seat).
  8. Give the float ball a gentle nudge to confirm it isn't lodged in place.
  9. Allow the tank to refill with water and listen to determine if the running sound has stopped.
  10. Put the tank lid back on.

Troubleshooting

  • If the toilet still runs, the issue might be with the fill valve. Check if the float is set too high, causing water to continuously go down the overflow tube. Adjust the float screw or clip to lower the water level.
  • Inspect the overflow tube itself for cracks or damage.
  • Ensure the flush valve seat (where the flapper rests) is clean and smooth. Any roughness can prevent a good seal.

Preventive Tips

  • Periodically check the flapper for wear and tear and replace it every few years.
  • Clean the inside of the tank occasionally to prevent mineral buildup.
  • Avoid using harsh chemical cleaners in the tank, as they can degrade parts.

Brief Summary

When your toilet constantly runs, it's typically due to a faulty flapper valve inside the tank that isn't sealing correctly. This can happen if the flapper is old, damaged, or simply dirty. The continuous leak wastes water and can lead to higher bills. To fix this, first remove the tank lid. Examine the flapper and the chain connecting it to the handle. If the flapper is worn or dirty, clean it or replace it. Ensure the chain has the right amount of slack. Also, check that the float isn't stuck. After making adjustments or replacements, let the tank refill and check if the running stops before replacing the lid.

Content Details

Keywords: toilet, running toilet, flapper, water conservation, DIY repair

Meta Description: Discover how to fix a toilet that won't stop running. This guide covers checking and replacing the flapper valve to stop leaks, save water, and lower your bills.

Guide Confidence: High

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