Sun Joe Pressure Washer No Detergent Not Working [Proven Fixes!]

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Updated in April 2025 | By John

Sun Joe Pressure Washer Not Dispensing Detergent An

If your Sun Joe pressure washer is not dispensing detergent, you’re not alone. This is a common problem that can be frustrating and inconvenient. But don’t worry, there’s a simple solution. In this guide, I’ll walk you through the steps to troubleshoot the issue and get your pressure washer back up and running in no time.

I’ll start by explaining how a pressure washer works and how detergent is dispensed. Then, I’ll discuss the most common causes of the problem and how to fix them. Finally, I’ll provide some tips for preventing future problems.

By the end of this guide, you’ll have the knowledge and tools you need to fix your Sun Joe pressure washer and get back to cleaning.

Reasons Why Sun Joe Pressure Washer No Detergent Not Working

No detergent in the tank

The most common reason for a Sun Joe pressure washer not working with detergent is that there is no detergent in the tank. Make sure that the detergent tank is filled with the correct type of detergent and that the lid is tightly closed.

Detergent is too thick
If the detergent is too thick, it will not be able to flow through the detergent pump and into the spray nozzle. Try thinning the detergent with water or using a different type of detergent.

Detergent pump is clogged
If the detergent pump is clogged, it will not be able to pump the detergent through the hose and into the spray nozzle. Try cleaning the detergent pump with a brush or a toothpick.

Detergent hose is kinked
If the detergent hose is kinked, it will restrict the flow of detergent and prevent it from reaching the spray nozzle. Make sure that the detergent hose is not kinked and that it is free of obstructions.

Spray nozzle is clogged
If the spray nozzle is clogged, it will not be able to spray the detergent properly. Try cleaning the spray nozzle with a brush or a toothpick.

How to Troubleshoot And Fix: Sun Joe Pressure Washer No Detergent Not Working

Problem: Sun Joe Pressure Washer No Detergent Not Working

Your Sun Joe pressure washer is not dispensing detergent, even though you have added detergent to the detergent tank. This can be a frustrating problem, but it is usually easy to fix. Here are a few things to check:

Make sure the detergent tank is full:
The detergent tank on a Sun Joe pressure washer is located on the back of the unit. It is a clear plastic tank with a blue lid. To check the level of detergent, simply open the lid and look inside. If the tank is empty, fill it with detergent according to the manufacturer’s instructions.

Make sure the detergent hose is connected properly:
The detergent hose connects the detergent tank to the pressure washer. It is a clear plastic hose with a blue connector on one end and a yellow connector on the other end. To check the connection, look at the back of the pressure washer. The detergent hose should be connected to the detergent tank on the left side and to the pressure washer on the right side. If the hose is not connected properly, disconnect it and reconnect it.

Make sure the detergent pump is working properly:
The detergent pump is located inside the pressure washer. It is a small motor that pumps detergent from the detergent tank to the spray gun. To check the pump, turn on the pressure washer and listen for the pump to start. You should hear a humming sound. If you do not hear the pump, the pump may be broken. You will need to take the pressure washer to a qualified repair technician to have the pump replaced.

Solution: Sun Joe Pressure Washer No Detergent Not Working

Once you have identified the problem, you can fix it. Here are the solutions for each of the problems listed above:

If the detergent tank is empty, fill it with detergent according to the manufacturer’s instructions:

If the detergent hose is not connected properly, disconnect it and reconnect it:

If the detergent pump is broken, take the pressure washer to a qualified repair technician to have the pump replaced:

Once you have fixed the problem, your Sun Joe pressure washer should be able to dispense detergent again.

Prevention: Sun Joe Pressure Washer No Detergent Not Working

To prevent the problem of your Sun Joe pressure washer not dispensing detergent, you can take the following steps:

Always check the level of detergent in the detergent tank before you use the pressure washer:
If the tank is empty, fill it with detergent before you start using the pressure washer.

Make sure the detergent hose is connected properly:
Inspect the detergent hose before you use the pressure washer to make sure it is connected properly. If the hose is not connected properly, disconnect it and reconnect it.

Have the pressure washer serviced regularly:
A qualified repair technician can inspect the pressure washer and identify any potential problems. They can also make repairs to the pressure washer to prevent future problems.

By following these steps, you can help prevent the problem of your Sun Joe pressure washer not dispensing detergent.

Also Read THis: Sun Joe Pressure Washer Soap Injector Not Working

FAQs: Sun Joe Pressure Washer No Detergent Not Working

Why isn’t my Sun Joe pressure washer dispensing detergent?

There are a few possible reasons why your Sun Joe pressure washer may not be dispensing detergent.

The detergent bottle is not properly inserted into the detergent tank: Make sure that the detergent bottle is securely inserted into the detergent tank and that the lid is tightly closed.

The detergent is clogged in the detergent line: To clear the detergent line, disconnect the detergent line from the detergent tank and flush it with water.

The detergent pump is not working properly: If the detergent pump is not working properly, you may need to replace it.

How do I add detergent to my Sun Joe pressure washer?

To add detergent to your Sun Joe pressure washer, follow these steps:

1. Turn off the pressure washer and disconnect the hose from the gun.
2. Remove the detergent bottle from the detergent tank.
3. Add the desired amount of detergent to the detergent bottle.
4. Reinsert the detergent bottle into the detergent tank.
5. Connect the hose to the gun and turn on the pressure washer.

How much detergent should I use for my Sun Joe pressure washer?

The amount of detergent you use will depend on the type of surface you are cleaning and the level of dirt or grime. For general cleaning, use a 1:1 ratio of detergent to water. For heavily soiled surfaces, use a 2:1 ratio of detergent to water.

What kind of detergent can I use in my Sun Joe pressure washer?

You can use any type of detergent that is designed for use with pressure washers. However, some detergents are more effective than others. For best results, use a detergent that is specifically designed for cleaning concrete, siding, or other surfaces.

What if my Sun Joe pressure washer still isn’t dispensing detergent?

If your Sun Joe pressure washer still isn’t dispensing detergent after you have tried the steps above, you may need to contact the manufacturer for assistance.

About The Author

I am John, and I am the creator of this website. I have been in the woodworking industry for about 5 years. I developed my passion for DIY projects around the house when I was in high school. I have discovered a new appreciation for those who have the experience to pass along their expertise. They know what works best and are able to help others. I am proud to be among them.

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