Toilet Tank NOT Filling but Water Running

 How to Fix the Toilet Tank Not Filling but the Water is Running

 When the toilet tank is not filling, the water is still running. It can be caused by a number of things. Here’s how to find out what’s wrong.

The toilet tank is a necessary part of your plumbing system. It holds the water in your toilet so that it can flush away the waste from your body. When the toilet tank is full, it will be ready to receive the water from the sink faucet. However, the toilet tank is not always full. In fact, it may not be full at all. The water from the sink will still be able to flow out of the toilet, but it will not be able to come back into the toilet. This is called the toilet tank not filling. The toilet tank not filling can be caused by a variety of reasons. Here are some common causes of the toilet tank not filling but running water

I am going to discuss about Toilet Tank NOT Filling but Water Running

Toilet Tank NOT Filling but Water Running

Possible Causes

Wrong Height of the Float

Faulty Fill Valve

Leaking Flapper

Low Water Pressure

Damaged Fill Tube/ Valve

Adjust the Toilet Float

Repair or Replace the Fill Valve

Replace the Toilet Flapper

Replace the Overflow Tube

Prevention Measures & Tips

Toilet Bowl Water Level Recedes & Drains Completely

Toilet Tank NOT Filling but Water Running

The water should always be at its full capacity in the tank when it’s ready to flush. If the water is not at full capacity, there’s something wrong with the flush valve or the tank. The tank should be filled to the max, flush the toilet, and then refill it. If you do not see the water filling up to the max, check the flapper. Make sure it is in the closed position.

When you notice that your toilet isn’t working properly, there are several things you can do to make sure you’re able to flush away your waste.

Wrong Height of the Float

The float ball is an important part of your aquarium. It sits on the surface of the water and regulates how much water flows in and out of the tank. It also regulates the water temperature and keeps algae and bacteria levels low.

If you are using the right tools for your work, you should be able to adjust the water level in the tank. For instance, if you are using a palette knife, you may want to lower the water level in order to keep the paint from running down your palette. However, if you are using a brush, you should be able to raise the water level in the tank in order to avoid creating a puddle on your paper. 

Faulty Fill Valve

The fault in this case was the fill valve itself. It was worn out and not working properly. The problem was that the water wasn’t flowing smoothly to the bowl, and was causing the water level in the tank to go down.

The best way to check the condition of your pump is to check the hose for any kinks or other damage.

Leaking Flapper

A leaking flapper is usually caused by improper maintenance or a failure of the flapper itself. The flapper is a metal disk that slides down and closes the drain hole at the bottom of the toilet tank. It is a two-piece assembly that contains the seal and the lever that moves the seal up and down.

In order to solve this problem, you need to have the toilet inspected by a professional. If your toilet is leaking, the first thing that you should do is to get it checked out.

It’s important to make sure that the length of the chain is as close to the length of the handle as possible. If you can’t get your chain exactly the same length as the handle, you will need to add or remove links to get the right length.

Low Water Pressure

The best way to check if your water is flowing at the right speed is to look at the flow of water as it moves through the hose. If there are no bubbles, you have a problem. If you see bubbles, then you’re fine.

If you are having trouble with your water pressure, it could be caused by a rusted supply pipe, a slightly closed fill valve, or even a clogged filter. To check your water pressure, first look at the water coming out of the spout on the faucet. If there is no pressure at all, then you will need to take a closer look at your pipes.

If the valve isn’t opened wide enough to allow for enough water to refill, it will continue to move at that slow speed.

Damaged Fill Tube/ Valve

If you’re like me, you might have a few empty bottles of paint sitting around your studio. But you know what? You probably don’t need to keep buying paint because you can easily make your own.

If you see water coming out of the overflow tube, then you have a damaged fill tube. You can fix it by clipping it to the overflow tube.

Adjust the Toilet Float

The float ball is usually located on the back of the toilet tank. This is where you’ll find the water level indicator. The float ball is a round plastic or rubber object that floats on top of the water in the tank. If the ball is too far down, the water level is too low; if the ball is too high, the water level is too high. You can adjust the water level by simply lifting the ball up or down.

Repair or Replace the Fill Valve

The upper fill valve is located on the left side of the tank where you connect directly to the water supply line. It depends on the float to move up signaling water to refill and shuts as the float gradually rises. The fill valve could wear out after some time, it could be filled with debris from the water supply pipe. If you are experiencing low pressure or no flow at all, this is a good indication that you need to replace your fill valve.

The accumulation will damage the valve inhibiting the good flow of water also causing low water pressure in the tank. At this point, you could repair or replace the fill valve. Let’s start with the repair.

Replace the Toilet Flapper

The next thing you can do is to replace the flapper and the trip assembly if necessary.First check that the flushing handle is loose, then open the tank.The water chain should be half an inch away from the flap at the bottom of the tank.

When the flapper is too tight or if it hooks to another part of the toilet tank it will cause your toilet to constantly run with water.The chain should not be lengthy because it could get into the flapper hole, preventing it from closing properly.

It’s still not quite perfect, but we’re getting there. Check again for debris around the location of the flapper.

Sometimes buildup could be too much around the flush valve seal and this prevents it from sealing properly.Here’s what you need to do for all these three cases:

On the other hand, the flap can easily be worn out and therefore it just can’t close the drain hole well, so instead of leaving the warped and old flap on, you’ll have to replace it.

You’re looking for a replacement for a type you already have in the kitchen. Ask the hardware store for a replacement for that type.

Flapper styles come in a wide variety. Most flappers have a ring that goes over the tube, but some snap over the ears on the flush valve.

To make sure the toilet is flushing correctly, use the toilet wand and ensure the right size of balls are in the toilet tank. It’s easy to identify the type of flapper it is and ask for the same kind or opt for the universal flapper, which offers room for changes as you replace it.

If the flapper does not work, you may go get another flapper. Then, try the process again.

Replace the Overflow Tube

If your overflow tube is leaking, there are several things you can do to fix it. First, make sure that the overflow tube is not leaking by checking it. If it is leaking, then you need to find out why it is leaking and fix it. You can use a rubber band or a piece of string to tighten the tubes, but don’t leave it unattended. Once you have found out what the problem is, then you can fix it.

Attach the refill tube to the tank by sliding the tube into the hole in the side of the tank. The tube should fit snugly and should not be able to fall out of the hole.

Prevention Measures & Tips

You don’t want to be paying more than what you need to pay for a toilet because you’re not looking at it as often as you should. Check it frequently to see if any of the parts need to be replaced. Don’t forget to check your faucets as well. If you notice that they are leaking, it’s important to fix them before they cause damage to your home.

It’s important to know what the cause of a problem is before you attempt to fix it. Unfortunately, it’s not always easy to find out why the toilet is not working. Sometimes, it can be difficult to pinpoint the exact reason. However, there are several things that you can do to avoid this problem in the future. First, make sure that you flush the toilet before using it. Also, be sure to turn off the water supply if you need to use the toilet.


In conclusion, Toilet Tank NOT Filling but Water Running is a common problem that occurs when the tank is full, the valve is not working properly, or the drain pipe is clogged. The main reason for this problem is that the tank is full of water, so it is impossible for the toilet to drain. In order to solve this problem, you should first find the cause of the problem and then fix it. Here are some of the causes that could lead to this problem.


1. How to find out the cause of the water running?

You can use a water pressure gauge to check the water pressure.

2.What should I do if the water runs out every time I flush?

This problem usually occurs when there’s a blockage in the pipes. You should try to clear the blockage, but if it doesn’t work, then you should call a plumber.

3. Is there any other way to find out the cause of the water running?

There is another way to find out the cause of the water running.

4.Why does water still run out of the toilet even though I’ve turned off the water?

The problem is that there’s a leak in the toilet. You can fix this by getting a plunger and putting it in the toilet, which will force the water down and stop it from leaking.

5. How do I stop water from running out of the toilet?

There are two solutions to this problem. One is to use a plunger, and the other is to use a water sealer. You need to get a new toilet.

6. What is the reason behind this problem?

The main reason behind this problem is the faulty valve.

7. What is the difference between a flapper and a ballcock?

A flapper is a device that is located inside the tank. It is used to release the water into the bowl. A ballcock is a device that is located outside of the tank. It is used to stop the water from flowing out of the tank.

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