How to Fix a Kohler Toilet That Keeps Running

Sometimes your Kohler may encounter some defects, and continuous running is no exception. These are common types of toilets that you expect to see in most houses. However, after long usage, you might start experiencing some issues with your toilet, which can be hectic.

If you are operating with a runny Kohler toilet, don’t worry because here is a reliable source of information to solve the issue. It’s not time to start cursing the toilet but act. Our article shall equip you with a straightforward guide to fix a Kohler toilet that keeps running.

The problems might arise due to various defects as a result of faulty components. Therefore, you should diagnose these issues like infill valves and flappers by the end of the discussion. The solution to these challenges varies, and therefore, it’s our responsibility to tell you everything you need to know.

Why is my Kohler toilet running continuously?Why is my Kohler toilet running continuously

Before we start treating the disease, let’s first diagnose the causatives. Doctors won’t treat you unless you go through some diagnosis. This applies the same to toilets that keep running.

A lever on the Kohler toilet usually raises an arm, pulling on the thread. The chain will lift the valve, allowing water to run through and then flush the tank. Whenever the bracelet slices the string, its flapper will then refill the toilet.

However, if the toilet runs off and on, the tank may be problematic. Additionally, if you don’t wash your bathroom, the leak may encourage urine flow from the tank. So several factors may give rise to such a problem.

Additionally, operating with a faulty flapper can be another reason you have a runny toilet. Alternatively, the fill valve might be absent. After you know about the problem, you are now able to initiate the troubleshooting process.

Troubleshooting a runny Kohler toilet

Step 1: Identify the issuehow to fix a kohler toilet that keeps running

Before attempting anything, you are advised to run a quick test to have a clear view of the problem. Under this step, marking the level of water in the tank is necessary before switching off the water source line.

Give it around two hours and keenly observe whether there were changes made. You should interpret the changes as it speaks a lot about the type of fault with your toilet. Below are some of the changes you should expect;

  1.  The water depth hasn’t changed, and there’s neither crack nor leak. This implies that the fill valve located on the left of your tank is locked open. Cleaning or removing it can be the best solution.
  2. The depth of the water is at the flapper level. However, because the flapper is worn, sometimes water may leak in the cup. So, the best solution to this issue is to remove the worn seal or flapper.
  3. The stream is completely out. This problem might arise due to a worn-out gasket. Water will therefore leak in the flush valve; replacing it can be the only suitable solution.
  4. A small volume of water was lost. Finding such a cause can be tricky. I am saying so because this issue might also arise from a faulty valve, causing slight damage. Check if this is the issue and replace it.

Step 2: Finding the locationFinding the location

You may use a simple test to conclude whether a toilet leakage is a problem or not. If this is the case, then you can easily locate the problem. It would help if you therefore started by removing the toilet tank coverings.  However, it would help if you waited for a while until your toilet settles.

You should add black food coloring into the toilet bowl and then observe to point the color direction. By doing so, you will be in a good position to determine where the leak is emanating from.

If you find the flapper leaking, you have no other choice than to use a paper towel to exert pressure. Continue holding its top tightly. Place some food colorings on the flapper and then observe its reaction when pressing against it.

If, after doing this, and still doesn’t work, try lengthening the chain sticking the flapper in place. Be observant, and if you see food coloring begins to drift in the flapper, it’s now time to replace it.

Step 3: Replace the flapperReplace the flapper

The next step will be to replace the flapper, and it involves the following instruction;

Start by switching off the tap by turning the water source clockwise. You also want to be sure that the reservoir is empty. To empty the tank, detach the flapper immediately. The next will be now to get rid of the flapper without hesitation.

The flapper will secure the flush valve, and on the flush valve’s sides, a hinge may protect it in the ring. Roll or twist to remove it via the flush valve. You are also allowed to detach the arm chain out of the arm lifter. This step is very simple, just like disconnecting the chain from the lifter’s arm clip.

Change the existing flapper and make sure you have regular flappers. What I mean is that the new and existing ones should be of similar models.

Step 4: Correcting valve complicationsCorrecting valve complications

The valve plays a significant mechanical role, and the flat is the air bubble floating on the water. Its work is to stop water whenever it reaches a specific level. When the water level is below the mark, it will initiate it.

There are always two traditional floating designs, and mostly, you will see cylinders around the valve. They portray the shape of a pole located on the left. If this is the case, start by breaking the waste and then solve the problem.

Step 5: Replacing fill valveReplacing fill valve

Replacing the fill valve isn’t that complicated; you need to ensure it correctly fits your toilet. This means that you should be careful when making a selection, mostly when buying generic types. So, to work on your valve, you should consider these steps;

Stop the water supply and then rotate the team clockwise until water flow stops completely. You are also supposed to disconnect the water line from the fill valve’s rim.

Empty the tank. Under this step, you should ensure the tank is free of water before rinsing the toilet. At this point, the valve would have been fully released, pushing residual water beneath the flush valve towards your surface. Therefore, to ensure there’s no water leakage, you are advised to use a bucket or a towel beneath the lock nut of the fill valve. Doing so will contain the entire stream.

Remove the lock before detaching the valve. You are supposed to slide the overflow filling tube and then follow by screwing the nut in the tank’s bottom part, securing the fill valve using a screwdriver.

Install the new valve. Under this step, you should insert the newly bought fill valve on the bath. You can then screw the nut into the plate snuggly without applying any force. It’s now time to connect the refill hose into the overflow tube.

Frequently asked questions:

  • When should you remove the toilet fill valve?

You first have to run some tests by holding up the float before unscrewing the ball. If you hear grinding or screeching noises or water, don’t stop flowing; replacing the valve is the best solution.

  • Why is my Kohler toilet producing a hissing sound?

Try flushing out the fill valve because it might be the real causative of hissing sound.

Final words

Hopefully, the above article provides you with essential knowledge on fixing a Kohler toilet that keeps running. However, you should follow all the above steps carefully to be on the safe side. If the problem becomes persistent, I would advise you to have the company of an experienced plumber.

An expert can determine where the problem is, or you can seek help from Kohler.

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