5 Reasons Your Dishwasher Makes Loud Noise and Fix It!

You know that moment when you hear your dishwasher making a loud, annoying noise? It can be really frustrating. This noise usually means something’s not quite right.

First, check if there’s anything stuck in the spray arms. Sometimes, bits of food or broken glass can cause noise. Also, make sure the dishwasher is level. If it’s not, it can shake and make noise. If these tips don’t help, you might need to call a repair person to fix it.

In this blog post, we’ll look at why your dishwasher might be making that loud racket and what you can do about it. We’ll break it down into easy steps so you can find the problem and fix it quickly. Let’s get started on making your dishwasher quiet again!

Common Reasons Why a Dishwasher Makes Loud Noise

Dishwashers are usually quiet, but sometimes they can make loud noises. Here are some common reasons why this might happen:

1. Loose or Worn Parts

One reason for loud noise is loose or worn parts. The dishwasher has many parts like spray arms and racks. If these parts become loose or worn out, they can cause banging or rattling sounds. Check to see if the spray arms are secure and not hitting other parts inside the dishwasher.

2. Clogged Spray Arms

The spray arms in a dishwasher spin around to clean your dishes. If they get clogged with food particles or mineral deposits, they might not spin correctly. This can cause noise as the arms struggle to move. Cleaning the spray arms can help reduce the noise. Remove them and rinse them under water to clear any blockages.

3. Dirty Filters

Dishwashers have filters that catch food and debris. If these filters become dirty or clogged, they can cause the dishwasher to make loud noises. Clean the filters regularly to ensure they are not blocked. This will help the dishwasher run more smoothly and quietly.

4. Water Pump Issues

The water pump helps move water through the dishwasher. If the pump is faulty or has debris inside, it can make loud grinding or whirring noises. You might need to inspect the pump and remove any debris. If the pump is damaged, it may need to be repaired or replaced.

5. Overloading the Dishwasher

Putting too many dishes in the dishwasher can cause it to be noisy. Overloading can prevent the spray arms from moving freely and may lead to banging sounds. Try not to overload the dishwasher and make sure the dishes are arranged properly.

If your dishwasher is making loud noises, checking these common issues can help you find and fix the problem.

Troubleshoot and Fix Your Dishwasher Makes Loud Noise

A noisy dishwasher can be quite a hassle. Fortunately, you can often fix the issue yourself by following a few simple steps. Let’s dive into each step in detail.

1. Check for Loose or Worn Parts

The first thing you should do is check for loose or worn parts inside your dishwasher. Over time, some parts may become loose or wear out, which can cause loud noises during operation. Start by looking at the spray arms, which are the parts inside the dishwasher that spin around to spray water on your dishes.

If these arms are loose or not spinning properly, they can make a lot of noise. To check them, open the dishwasher door and examine the spray arms. You should be able to gently move them by hand. If they feel loose, you may need to tighten them.

There might be a screw or nut that holds them in place, so make sure it is secure. If tightening doesn’t help or if the spray arms are damaged, you might need to replace them. You can usually find replacement spray arms at home improvement stores or online.

Next, focus on the dishwasher’s filters. The filters catch food particles and other debris to prevent them from clogging the machine. If the filters are clogged, they can cause strange noises. To clean the filters, remove them from their place and rinse them under running water.

Make sure to get rid of all food particles and debris. Once the filters are clean, put them back in their proper place. Also, check the dishwasher’s racks to ensure they are properly positioned and not blocking the spray arms.

If any parts of the racks are damaged, they might need replacing as well. By addressing these issues, you can often reduce or eliminate the noise coming from your dishwasher.

2. Inspect for Objects Inside the Dishwasher

Another common cause of a noisy dishwasher is small objects that have fallen inside. These objects can interfere with the moving parts and create loud noises. To inspect for such objects, start by opening the dishwasher door and looking inside.

Remove any items that don’t belong, such as plastic utensils, food wrappers, or tags. Pay close attention to the spray arms and filters, as objects can sometimes get stuck in these areas. If you find anything stuck, gently remove it. Be careful not to damage any parts while doing this.

After removing any foreign objects, close the dishwasher door and run a short cycle without dishes inside. Listen carefully to see if the noise persists. If the noise stops, it was likely caused by one of the objects you removed. If the noise continues, there might be another issue that needs attention.

3. Examine the Dishwasher’s Drain Pump

The drain pump is another part of the dishwasher that can cause noise if it is not working correctly. The drain pump helps to remove water from the dishwasher after each cycle. If it becomes clogged or damaged, it can make a loud noise.

To examine the drain pump, start by turning off the dishwasher and unplugging it from the power source to ensure safety. Locate the drain pump, which is usually at the bottom of the dishwasher. You may need to remove the lower spray arm or other parts to access it.

Once you can see the drain pump, check for any debris or food particles that might be clogging it. Carefully remove any obstructions you find. If the pump itself appears damaged or not working properly, it might need to be replaced.

Replacing the drain pump can be a bit more complex, so if you are unsure how to do it, consider seeking help from a professional. After cleaning or replacing the pump, put everything back in place and run a cycle to see if the noise has decreased.

4. Check the Dishwasher’s Motor

The motor is a key component of your dishwasher, and if it is making noise, it might be a sign of trouble. The motor helps the dishwasher run by driving the spray arms and other parts.

If you hear a grinding, banging, or any unusual noise coming from the motor, it might be damaged or worn out. To check the motor, you will need to access it, which may involve removing the lower spray arm or other components. Listen closely to the motor while the dishwasher is running.

If you hear a loud or unusual noise, it might be time to inspect or replace the motor. This step can be more complicated, so if you are not comfortable doing it yourself, you should call a professional technician. A technician can diagnose the issue and determine whether the motor needs repair or replacement.

5. Look for Water Supply Issues

Sometimes, the noise in your dishwasher can be related to issues with the water supply. If the water supply line is blocked or kinked, it can cause the dishwasher to make unusual noises. Start by checking the hose that connects the dishwasher to the water supply. Make sure the hose is not bent or damaged. If it is, it might need to be replaced.

Additionally, check the water pressure. Low water pressure can lead to noise and poor cleaning performance. By making sure the water supply is in good condition, you can reduce or eliminate noise and improve the overall performance of your dishwasher.

6. Clean the Dishwasher

Cleaning your dishwasher regularly is essential to keep it running smoothly and quietly. Over time, food debris and other build-up can cause the dishwasher to make loud noises. Start by removing any large food particles or debris from the bottom of the dishwasher. You can use a sponge or cloth to wipe down the interior and remove any build-up.

Next, run a cleaning cycle to help remove any remaining residue. You can use a dishwasher cleaner or a mixture of vinegar and baking soda for this. Simply add the cleaner or the vinegar and baking soda mixture to the dishwasher and run a cycle without any dishes inside.

This will help to clean the inside of the dishwasher and remove any build-up that might be causing noise. After the cleaning cycle, check if the noise has decreased.

7. Check the Installation

Finally, make sure that your dishwasher is installed correctly. An improperly installed dishwasher can cause noise during operation. Use a level to check that the dishwasher is even and adjust the feet or leveling legs if necessary. If the dishwasher is not level, it might vibrate or shake, leading to more noise.

If you are unsure about the installation or if the noise continues despite checking other factors, it might be worth calling a professional. They can help ensure that the dishwasher is installed correctly and functioning as it should.

I hope, by following these steps, you can often troubleshoot and fix the loud noise in your dishwasher. Regular maintenance and checking for loose or damaged parts can help keep your dishwasher running quietly and efficiently. If you find that the noise persists despite your efforts, it may be best to consult a professional to address more complex issues.

Questions in Your Mind

Is it normal for a dishwasher to make noise during the drying cycle?

Some noise during the drying cycle can be normal, especially if your dishwasher uses a fan or heating element. However, if the noise is loud or unusual, it might indicate a problem with the drying mechanism or another part of the dishwasher.

Can a damaged dishwasher rack cause loud noises?

Yes, a damaged dishwasher rack can cause loud noises. If the rack is not properly aligned or has broken parts, it can create banging or rattling sounds during operation. Inspect the racks for any damage and replace or repair them as needed.

Do I need to remove the lower spray arm to clean the dishwasher?

Not always. You can often clean the dishwasher without removing the lower spray arm by checking and cleaning the filters and interior. However, if you need to access the spray arm for cleaning or repairs, you may need to remove it according to the manufacturer’s instructions.

Is it important to run a cleaning cycle on the dishwasher regularly?

Yes, running a cleaning cycle regularly is important for maintaining your dishwasher. It helps remove build-up and debris that can cause noise and affect performance. Use a dishwasher cleaner or a mixture of vinegar and baking soda for this purpose.

Can a faulty water inlet valve cause a dishwasher to make noise?

Yes, a faulty water inlet valve can cause a dishwasher to make noise. The valve controls the water flow into the dishwasher. If it is not working correctly, it might create unusual sounds. Check the valve for proper operation and replace it if necessary.

Do I need to check the dishwasher’s installation if it’s making noise?

Yes, checking the dishwasher’s installation is important if it is making noise. An improperly installed dishwasher can cause vibrations and noise. Ensure the dishwasher is level and properly aligned to reduce or eliminate noise.

Is it safe to run the dishwasher if it’s making a strange noise?

It might not be safe to run the dishwasher if it’s making a strange noise. Strange noises can indicate mechanical problems that might cause further damage or safety issues. It’s best to stop the dishwasher and troubleshoot the issue or consult a professional.

Can water pressure issues cause a dishwasher to make loud noises?

Yes, water pressure issues can cause a dishwasher to make loud noises. Low or irregular water pressure can affect the dishwasher’s operation and lead to unusual sounds. Check the water supply and pressure to ensure they are adequate for proper functioning.

Do I need to replace the dishwasher’s spray arms if they are making noise?

Not necessarily. If the spray arms are making noise, first check if they are loose or obstructed. Tightening or cleaning the spray arms might resolve the issue. If they are damaged, you may need to replace them, but inspect them thoroughly before deciding.

Is it common for a dishwasher to make noise when filling with water?

Some noise during the filling process is normal as the water flows into the dishwasher. However, if the noise is loud or unusual, it might indicate a problem with the water inlet valve or hose. Check these parts to ensure they are functioning properly.