Troy Bilt Pressure Washer Detergent Siphon Not Working [Easy Fixes!]

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Updated in April 2025 | By John

If your Troy-Bilt pressure washer detergent siphon isn’t working, you’re not alone. This is a common problem that can be frustrating and inconvenient. But don’t worry, there’s a simple fix. In this guide, I’ll walk you through the steps to troubleshoot and repair your pressure washer detergent siphon.

I’ll start by explaining how the detergent siphon works and what could be causing the problem. Then, I’ll give you step-by-step instructions on how to fix it. By the end of this guide, you’ll be able to get your pressure washer up and running again in no time.

Reasons Why Troy Bilt Pressure Washer Detergent Siphon Not Working

Detergent Siphon Hose Is Clogged

The most common reason for a Troy Bilt pressure washer detergent siphon not working is a clogged detergent siphon hose. This can happen if the hose becomes kinked or if debris gets caught in it. To fix this problem, you will need to remove the detergent siphon hose from the pressure washer and clean it out.

Detergent Siphon Valve Is Stuck

Another common reason for a Troy Bilt pressure washer detergent siphon not working is a stuck detergent siphon valve. This can happen if the valve becomes gummed up with detergent or if it is not properly adjusted. To fix this problem, you will need to remove the detergent siphon valve from the pressure washer and clean it out. You may also need to adjust the valve so that it is properly seated.

Detergent Tank Is Empty

If the detergent tank on your Troy Bilt pressure washer is empty, the detergent siphon will not be able to draw any detergent into the pressure washer. To fix this problem, you will need to fill the detergent tank with detergent.

Detergent Is Too Thick

If the detergent you are using is too thick, it may not be able to flow through the detergent siphon hose properly. This can cause the detergent siphon to clog or to not work properly. To fix this problem, you will need to thin out the detergent with water.

Detergent Siphon Hose Is Not Connected Properly

If the detergent siphon hose is not connected properly to the pressure washer, it will not be able to draw any detergent into the pressure washer. To fix this problem, you will need to make sure that the detergent siphon hose is properly connected to the pressure washer.

Detergent Siphon Hose Is Kinked

If the detergent siphon hose is kinked, it will not be able to draw any detergent into the pressure washer. To fix this problem, you will need to straighten out the detergent siphon hose.

How to Troubleshoot And Fix: Troy Bilt Pressure Washer Detergent Siphon Not Working

Symptoms of a Problem with Your Troy Bilt Pressure Washer Detergent Siphon

There are a few different symptoms that you may experience if the detergent siphon on your Troy Bilt pressure washer is not working properly. These include:

The detergent tank is not filling up when you turn on the pressure washer.
The detergent is not being dispensed from the wand when you press the trigger.
The detergent is coming out of the wand in a weak or inconsistent stream.
The detergent is foaming up too much.

Troubleshooting Steps for a Troy Bilt Pressure Washer Detergent Siphon

If you are experiencing any of the symptoms listed above, here are a few troubleshooting steps you can take to try to fix the problem:

1. Check the detergent tank to make sure it is full:
If the tank is empty, fill it up with detergent and try again.

2. Check the detergent hose to make sure it is not kinked or blocked:
If the hose is kinked, straighten it out. If the hose is blocked, clean it out.3. Check the detergent valve to make sure it is open:
The detergent valve is located on the back of the pressure washer. It is a small, round valve with a lever. Make sure the lever is in the open position.

4. Check the detergent siphon tube to make sure it is not clogged:
The detergent siphon tube is a small, clear tube that connects the detergent tank to the wand. If the tube is clogged, clean it out.

5. Check the detergent pump to make sure it is working properly:
The detergent pump is located on the back of the pressure washer. It is a small, cylindrical device with a motor. To check the pump, turn on the pressure washer and listen for the pump to start running. If you do not hear the pump running, the pump may be broken.

How to Fix a Troy Bilt Pressure Washer Detergent Siphon

If you have tried the troubleshooting steps above and the problem persists, you may need to replace the detergent siphon. To replace the detergent siphon, follow these steps:

1. Turn off the pressure washer and disconnect it from the power source:

2. Remove the detergent tank from the pressure washer:
3. Locate the detergent siphon:
The detergent siphon is a small, clear tube that connects the detergent tank to the wand.

4. Disconnect the detergent siphon from the detergent tank and the wand:

5. Install the new detergent siphon:
Make sure the new detergent siphon is properly connected to the detergent tank and the wand.

6. Reattach the detergent tank to the pressure washer:

7. Reconnect the pressure washer to the power source:

Preventing Problems with Your Troy Bilt Pressure Washer Detergent Siphon

You can help prevent problems with your Troy Bilt pressure washer detergent siphon by following these tips:

Keep the detergent tank full.
Avoid kinking or blocking the detergent hose.
Keep the detergent valve open.
Clean the detergent siphon tube regularly.
Inspect the detergent pump regularly and replace it if necessary.

By following these tips, you can help keep your Troy Bilt pressure washer detergent siphon working properly and avoid costly repairs.

Also Read THis: Troy Bilt Xp Pressure Washer Soap Injector Not Working

FAQs: Troy Bilt Pressure Washer Detergent Siphon Not Working

Why is my Troy Bilt pressure washer detergent siphon not working?

There are a few possible reasons why your Troy Bilt pressure washer detergent siphon may not be working.

The detergent bottle is not properly inserted into the siphon tube: Make sure that the detergent bottle is inserted all the way into the siphon tube, and that the tube is not kinked or blocked.

The detergent is too thick: If the detergent is too thick, it may not flow properly through the siphon tube. Try using a thinner detergent, or adding a little water to the detergent bottle to thin it out.

The siphon tube is clogged: If the siphon tube is clogged, it will prevent the detergent from flowing properly. Try cleaning the siphon tube with a pipe cleaner or a small brush.

The pressure washer is not turned on: Make sure that the pressure washer is turned on and that the detergent pump is engaged.

How do I fix my Troy Bilt pressure washer detergent siphon?

To fix your Troy Bilt pressure washer detergent siphon, you can try the following steps:

1. Check the detergent bottle and siphon tube: Make sure that the detergent bottle is properly inserted into the siphon tube, and that the tube is not kinked or blocked.
2. Thin the detergent: If the detergent is too thick, try adding a little water to the detergent bottle to thin it out.
3. Clean the siphon tube: If the siphon tube is clogged, try cleaning it with a pipe cleaner or a small brush.
4. Turn on the pressure washer: Make sure that the pressure washer is turned on and that the detergent pump is engaged.

What is the difference between a Troy Bilt pressure washer detergent siphon and a Troy Bilt pressure washer detergent injector?

A Troy Bilt pressure washer detergent siphon uses gravity to draw detergent from the detergent bottle into the pressure washer. A Troy Bilt pressure washer detergent injector uses a pump to force detergent from the detergent bottle into the pressure washer.

Which is better, a Troy Bilt pressure washer detergent siphon or a Troy Bilt pressure washer detergent injector?

There is no definitive answer to this question, as the best type of detergent system for your pressure washer will depend on your individual needs and preferences. Some factors to consider include the type of pressure washer you have, the amount of detergent you need to use, and your budget.

How much detergent do I need to use for my Troy Bilt pressure washer?

The amount of detergent you need to use for your Troy Bilt pressure washer will depend on the size of the surface you are cleaning, the type of surface you are cleaning, and the severity of the dirt or grime. As a general rule, you will need to use more detergent for larger surfaces, more difficult surfaces, and more severe dirt or grime.

Additional Resources

[Troy Bilt Pressure Washer Detergent Siphon Instructions](https://www.troybilt.com/manuals/pressure-washers/tbd2200-tbd2250-tbd2550/tbd2200-tbd2250-tbd2550-owners-manual/)
[Troy Bilt Pressure Washer Detergent Injector Instructions](https://www.troybilt.com/manuals/pressure-washers/tbd2200-tbd2250-tbd2550/tbd2200-tbd2250-tbd2550-owners-manual/)
[How to Use a Pressure Washer Detergent Siphon](https://www.thespruce.com/how-to-use-a-pressure-washer-detergent-siphon-5110358)
[How to Use a Pressure Washer Detergent Injector](https://www.thespruce.com/how-to-use-a-pressure-washer-detergent-injector-5110360)

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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