All You Need to Know About Running Toilets

The first thing you need to ask yourself when referring to a running toilet is: “ Do I know which are the key parts of a toilet?”, well, just in case your answer is “No”, then take a closer look at the following list:

  • Tank lever: Connected to the handle, this lifts the rubber flapper, which triggers the flush. It is also called the lift rod.
  • Toilet flapper: Located at the base of the tank, the flapper lifts and triggers a flush of water to the toilet bowl. It’s also known as a flapper valve.
  • Toilet fill valve: This is the element responsible for refilling the tank after every flush.
  • Toilet float: This buoyant device, sometimes part of the flush valve, regulates the amount of water in the tank. Also called the float valve or ballcock.

Common Causes of a Running Toilet

Most toilet leaks are caused by a worn-out toilet flapper or a faulty toilet fill valve. The two main parts to focus on are the fill valve and the flapper. Remove the lid of the toilet tank and set it to the side, out of the way. If water is constantly running into the tank and to the overflow tube, the toilet valve is likely the issue. If water is running intermittently but not flowing to the overflow tube, the toilet flapper probably needs to be replaced.

How to Adjust or Replace the Toilet Fill Valve

The fill valve fills the tank after each flush. You can test the toilet fill valve by lifting the float cup to see if the water stops. If it does, the cup's float height may need to be adjusted.

Steps to Follow:

  1. Use a screwdriver to adjust the spine that runs along with the side fill valve.
  2. Turn it counterclockwise to lower the float cup and the water level so it stops below the overflow tube.

How to Replace the Toilet Flapper

If you’re trying to figure out how to fix a running toilet, examine the flapper. A flapper has a seal that keeps water in your tank. If the seal’s not working properly, you’ll hear the toilet running.

Steps to Follow:

  1. Turn off the water supply at the shutoff valve, then flush the toilet multiple times until all the water has drained from the tank.
  2. Reach into the tank and gently remove the flapper by pulling it off the two studs on both sides of the flush valve.

  3. Remove the chain from the flush handle lever.

  4. Install the new flapper by threading the holes on each side, over the two studs.

  5. Attach the chain to the flush handle lever, but make sure not to pull the flapper open in the process.

  6. Turn on the water supply and flush the toilet to make sure the leak is fixed.

  7. If the flapper doesn’t close properly, adjust the flapper chain length as needed.

If the toilet keeps running and having issues after you tried replacing all the parts, then you should consider replacing it with a new toilet. At JCN Plumbing we have a special offer every month for toilet replacement services. Included in the special offer is to remove the old toilet and replace it with a new one provided by us.

If you live in Miami Dade or Broward, give us a call to obtain more information from our customer service specialists.

Free estimates - (305) 770-6860