1. Home

Diagnose a Running Toilet in 3 Easy Steps

By , About.com Guide

2 of 5

Step 1: Check the Overflow Valve
Check the toilet overflow tube for running water.

Check the toilet overflow tube for running water.

Aaron Stickley
Check the overflow tube. If you can see water going into the overflow then you know that the fill valve is not shutting off all the way and needs to be replaced.

  1. About.com
  2. Home
  3. Plumbing
  4. Toilets
  5. Diagnose a Running Toilet - Step 1 Check the Overflow Valve

©2013 About.com. All rights reserved.