How to Fix a Toilet Tank That's Not Filling: The Ultimate Guide
If your toilet tank isn’t filling up with water, don’t panic. There are a few things you can do to fix the problem. In this guide, we will walk you through the steps you can take to get your toilet tank up and running again.
We will also discuss some of the potential causes of this issue, and how to prevent it from happening in the future. So read on for all of the information you need to know about fixing a toilet tank that’s not filling.
How Does a Toilet Tank Work?
Before we get into how to fix a toilet tank that’s not filling, it’s important to understand how the toilet tank works.
Now that you know how a toilet tank works, let’s talk about what can cause it to stop filling up with water.
9 Reasons Behind Your Toilet Tank Not Filling & How to Fix Each One
There are a few different reasons why your toilet tank might not be filling up with water. We’ve listed the most common ones below, along with how to fix each issue.
1. Low water pressure
This is the most common reason for a slow-filling toilet tank. If your home has low water pressure, it’s likely that your toilet tank is also affected. Low water pressure can be caused by a variety of factors, including:
To fix this issue, you’ll need to increase the water pressure in your home. This can be done by checking for leaks in your home’s water line and repairing them, or by contacting your municipal water supplier.
2. Damaged trip lever
Damage to the trip lever can also keep your tank from filling properly. The trip lever is the arm that hangs down from the side of the tank, and is attached to the flush valve. This arm controls a stopper inside the tank that opens to allow water to flow in when you flush. If this arm is damaged, it may not be able to lift the stopper high enough to allow water to flow in.
You can check to see if the trip lever is the problem by flushing your toilet and watching the tank. If the water level doesn’t rise, then you know you have a problem with the trip lever. To fix this, you’ll need to remove the lid from your tank and take a look at the trip lever. Make sure that it’s not bent or damaged in any way. If it is, you’ll need to replace it.
3. Problem with the water supply line
If your water supply line is the problem, you’ll need to turn off the water to your toilet and replace the supply line. To do this, locate the shut-off valve on the wall behind your toilet (it should be within a few inches of the floor).
Turn it clockwise to shut off the water. Next, flush your toilet to empty the tank. Then, unscrew the water supply line from the fill valve and remove it. Take it with you to your local hardware store so you can purchase a replacement that’s the same size and style. To install the new line, screw it onto the fill valve and turn on the shut-off valve.
4. Broken or misadjusted float arm or ball
The float arm or ball is what tells the fill valve when to turn off. If this part is broken or misadjusted, it can cause your tank to keep running and not fill up. To check if this is the problem, flush your toilet and watch the water level in the tank.
If it doesn’t rise high enough, then you know you have an issue with the float arm or ball. To fix it, you’ll need to adjust or replace the float arm or ball. This can be a tricky process, so it’s best to consult a professional if you’re not sure how to do it.
5. Misadjusted fill valve
If your fill valve is misadjusted, it can cause your toilet tank to not fill properly. The fill valve is the part of the toilet that controls the flow of water into the tank. To adjust the fill valve, you’ll need to turn off the water to your toilet and flush it to empty the tank.
Then, remove the lid from the tank and locate the fill valve. There should be a knob or lever on the fill valve that you can turn in order to adjust it. Turn it clockwise to increase the water level in the tank, or counterclockwise to decrease it. Once you’ve adjusted the fill valve, turn on the water and flush your toilet to test it.
6. Broken toilet bowl
A broken toilet bowl can also keep your tank from filling properly. If your toilet bowl is cracked or chipped, it may be leaking water into the drain, and not allowing the tank to fill up.
To fix this, you’ll need to replace the toilet bowl. This is a difficult repair that should be done by a professional.
7. Worn-out flapper valve
The flapper valve is a rubber seal that sits over the drain, at the bottom of the tank. When you flush, the flapper valve opens to allow water to flow from the tank into the bowl. If your toilet’s flapper valve is worn out, it may not be sealing properly, and water may be leaking from the tank.
To replace the flapper valve, you’ll need to shut off your toilet’s water, and flush the toilet to empty the tank. Then, remove the lid and locate the flapper valve at the bottom of the tank. Disconnect it from the chain and remove it. Take it with you to your local hardware store so you can purchase a replacement that’s the same size and style. To install the new flapper valve, simply put it in place, and reconnect the chain.
8. Damaged overflow tube
If your overflow tube is cracked or damaged, water will leak out of the tank and into the bowl. This can cause your toilet to run constantly, as well as waste water. You’ll need to replace the overflow tube if it’s damaged. To do this, first, turn off the water to your toilet by shutting off the valve behind it.
Then, flush the toilet to empty the tank. Next, remove the bolts that hold the tank to the bowl, and lift off the tank. Once you have access to the overflow tube, remove it by unscrewing it from the flush valve. You can then install a new overflow tube by screwing it into place. Finally, reattach the tank to the bowl and turn the water back on.
How to Prevent Toilet Tank Problems
Now that you know how to fix a toilet tank that’s not filling, you can prevent these problems from happening in the first place. To do this, you should:
Check water level
Check the water level in your tank regularly, and adjust it if necessary.
Inspect your fill valve and float arm or ball for damage, and replace them if they’re worn out.
Clean your toilet tank regularly to remove any build-up of sediment or debris.
By following these tips, you can keep your toilet running properly and avoid costly repairs.
Frequently Asked Questions
How do fill valves work?
Fill valves are located in the tank of your toilet, and they control the flow of water into the tank. When you flush, the fill valve will open to allow water to flow from the tank into the bowl.
Does the toilet’s float adjust the water level?
The float is what controls the water level in your toilet tank. It’s usually a ball that sits on top of the water, and rises as the water level in the tank increases. You can adjust the water level by turning the knob on the fill valve.
Is a float ball or a float cup better?
There are two types of floats: float balls and float cups. Float balls are usually found in older toilets, while float cups are more common in newer models. Float cups are generally considered to be better because they’re less likely to get stuck in the tank.