Why is my toilet gurgling and wont flush?

Author: Cornell Daniel  |  Last update: Saturday, April 12, 2025

What Causes a Toilet to Gurgle? The strange gurgling noises are the result of negative air pressure in your drain pipes. So, if you hear these noises, it's because something is blocking your drain pipes. Instead of flowing down the line freely, it pushes back and produces those unusual sounds.

How do you fix a toilet that is gurgling?

Tips to Fix a Gurgling Toilet
  1. Try plunging: Start with a good old plunger. ...
  2. Snake the drain: If plunging doesn't work, try a drain auger, also known as a sewer snake. ...
  3. Check and clear the vent stack: Sometimes, a blockage in the vent stack causes toilet gurgling.

Why does my toilet gurgle but drains fine?

This is a typical symptom of a partial blockage of the drain waste and vent system that serves the toilet. This also can be caused if something is lodged in the toilet trap way, where the toilet connects to the drain or improper connection of the toilet to the drain.

Why did my toilet bubble and now won't flush?

The most common cause is either something caught in the bowl or a venting issue. The bubbling is usually a venting issue. While no vent should ever be capped (that was a good first step) it's possible either this toilet isn't vented properly or the vent is clogged.

Can a plunger fix a gurgling toilet?

Plunging is often the first line of defense against toilet clogs and can sometimes resolve gurgling issues. Follow these steps: Ensure there's enough water in the bowl to cover the plunger head.

Secret way to BOOST your TOILET FLUSH FOR FREE - STOP CLOGS

Does a gurgling toilet mean septic tank is full?

When your septic tank is excessively full, your toilet may start acting odd. You might find that your toilet doesn't fully flush or flushes very slowly and odd noises occur when you flush your toilet. These noises usually sound like gurgling or bubbling.

Why won't my toilet unclog after using a plunger?

If the water level is low, the plunger may not seal properly or achieve the suction it needs to be effective. Pour water into the toilet if you need to. Position the plunger directly over the drain opening and plunge slowly and gently a few times. This ensures you have a good seal.

Should I call a plumber for a gurgling toilet?

The fix is to plunge the toilet until the clog is removed. However, if you notice gurgling sounds even after removing the clog, you will want to have your plumber clean the sewer lines. For instance, there could be excess toilet paper still causing a partial clog and preventing proper airflow down the pipe.

How to remove air from toilet pipes?

Turn On Faucets Throughout Your Home

It is only necessary to open the faucets a half turn to allow the air in your pipes to escape. After you turn on all the cold and hot water faucets in your house, you should also flush your toilets to clear out the air trapped in your pipes.

Why is my toilet flushing slow and gurgling?

Improper Water Level

If you have a gurgling toilet, it is likely that the water level inside the tank or bowl is too low. A lack of water is problematic, not only for the low water pressure but also because it increases the chance of a clog.

Why won't my drain stop gurgling?

So in summary – clogged drains, blocked vents, main sewer clogs, and incorrect pipe slopes are basically the four common culprits of a gurgling drain. Once you can pinpoint which one might be your particular issue, you can start exploring the right tactics to get that plumbing symphony silenced once and for all.

What are the signs of a full septic tank?

How can you tell if your septic tank is full?
  • You have trouble flushing your toilet, or it's constantly backing up. ...
  • Your pipes make a gurgling sound or drain very slowly. ...
  • Your lawn is suddenly growing lush, green grass. ...
  • Water starts to pool in your yard. ...
  • Your home or yard smells like… well, sewage.

Is toilet gurgling normal?

That gurgling sound isn't just your toilet clearing its throat – it's a sign that something's disrupting the normal flow of air and water within your plumbing system.

Why is my toilet not flushing?

There are a few different reasons why your toilet might be resisting your attempts to flush. It could be a blockage, it could be a problem with the flushing mechanics, it could be a water supply problem or it could simply be a broken handle.

Why does my toilet gurgle when I have a washing machine?

Your drains are partially or completely clogged – One of the most simple reasons your toilet is gurgling is because the main drain on your washing machine is clogged. When your washing machine drains, and there's a clog, the water path is shrunken or restricted.

Where is the vent stack on a toilet?

Behind or within the Wall: In most cases, the vent pipe for a toilet should run vertically from the toilet's waste pipe (known as the closet bend) and extend upward to connect with the main vent stack or a branch vent line that ultimately exits through the roof of your home.

How to tell if your toilet is air locked?

If air is trapped in your system, it may cause gurgling, or bubbling in your toilets. Incomplete Toilet Flush Cycle: If when you flush the toilet it does not flush completely, and water continues to swirl around in the bowl and goes down slowly, it is usually caused by an air lock.

How do I get trapped air out of my toilet?

Excess Air in the Water Tank

Just open the filler valve at the back of your toilet and wait for about five minutes while it drains out some of its own water, then try refilling it again. This should get rid of any excess gas rattling around in there.

Will air in water pipes go away?

By turning off your main water supply and running all faucets for 10-15 minutes, you force any trapped air through your water pipes. Let's dive in a bit deeper to help you remove unnecessary air from pipes. Luckily, the fix for this is relatively simple and something most homeowners can easily do on their own.

What happens if you don't fix a gurgling toilet?

If your home and pipes are in good condition, you likely won't notice any damage at first. But over time, and with continued use, these can weaken your pipes and lead to leaks and other damage. The next time your drains are clogged or your bathroom sink gurgles, don't reach for the drain cleaner.

How to unclog main sewer line?

Your step-by-step guide: How to clear a main sewer line clog
  1. Step 1: Loosen the cap on the drain pipe. ...
  2. Step 2: Open the cap and let the buildup drain out. ...
  3. Step 3: Feed the auger cable into the drain pipe. ...
  4. Step 4: Run the auger until the clog is clear—and beyond. ...
  5. Step 5: Hose down the pipe and auger cable.

How to unclog a gurgling toilet?

Use a toilet auger: If plunging doesn't resolve the issue, you can try using a toilet auger. Insert the auger's flexible cable into the toilet drain and slowly rotate the handle while applying gentle pressure. This can help break up and remove any stubborn clogs in the trap.

What is the strongest thing to unclog a toilet?

One of the strongest substances for unclogging a toilet is a commercial drain cleaner specifically designed for toilet clogs. These cleaners typically contain powerful chemicals that dissolve organic matter and stubborn blockages.

Will letting a clogged toilet sit unclog it?

Leaving a clogged toilet overnight may seem like a harmless way to put off an unpleasant task, but it can lead to more significant issues. The most obvious problem is that the clog might not magically disappear. Instead, it can worsen as the blockage hardens or settles deeper into the pipes.

Will dish soap unclog a toilet?

Pouring dish soap down a toilet will unclog many obstructions. Pour 1/2- to 1-cup of dish soap directly in the toilet water and wait about 30 minutes before flushing. Follow the dish soap with a gallon of hot water if dish soap alone does not work. What is the strongest thing to unclog a toilet?

Previous article
How do you get rid of sand gnats?
Next article
Why does my water smell after heavy rain?