Chemical Injector Not Working On Pressure Washer: [You Should Try This]

If your pressure washer’s chemical injector is not working, you may be experiencing a number of problems, including:

The chemical solution is not being dispensed from the wand.
The chemical solution is being dispensed too slowly.
The chemical solution is being dispensed too quickly.
The chemical solution is being dispensed in a stream instead of a mist.

These problems can be frustrating and inconvenient, but they can be quickly diagnosed and resolved by following the steps in this troubleshooting guide.

Most Common Reasons Chemical Injector Not Working On Pressure Washer

Most Common Reasons

Blocked chemical injector nozzle:
The most common reason for a chemical injector not working is a blocked nozzle. This can be caused by dirt, debris, or soap scum. To fix this, remove the nozzle and clean it with a small brush.

Incorrect chemical injector settings:
The chemical injector may not be working properly if the settings are incorrect. Check the owner’s manual for the correct settings for your pressure washer.

Faulty chemical injector:
If the chemical injector is faulty, it will need to be replaced. You can purchase a replacement chemical injector from a hardware store or online retailer.

Low chemical pressure:
The chemical injector may not be working properly if the chemical pressure is too low. Check the pressure gauge on the chemical tank to make sure that the pressure is within the specified range.

Chemical tank empty:
If the chemical tank is empty, the chemical injector will not work. Make sure that the chemical tank is filled with the correct type of chemical.

How to Troubleshoot: Chemical Injector Not Working on Pressure Washer

Symptoms of a Faulty Chemical Injector

There are a few telltale signs that your chemical injector may be faulty. These include:

The chemical solution is not coming out of the wand when you trigger the sprayer:

The chemical solution is coming out of the wand in a weak or intermittent stream:

The chemical solution is coming out of the wand in the wrong direction:

The chemical solution is leaking from the injector:

If you notice any of these symptoms, it’s important to troubleshoot the problem and fix it as soon as possible. A faulty chemical injector can damage your pressure washer and potentially cause serious injury.

How to Troubleshoot a Chemical Injector

To troubleshoot a chemical injector, you’ll need to follow these steps:

1. Inspect the chemical injector for damage:
Look for cracks, leaks, or other signs of wear and tear. If you find any damage, you’ll need to replace the injector.

2. Check the chemical solution line for blockages:
The chemical solution line is the tube that connects the chemical injector to the sprayer. If the line is blocked, it can prevent the chemical solution from flowing properly. To check the line, disconnect it from the injector and spray some water through it. If the water flows freely, the line is clear. If the water does not flow freely, you’ll need to clear the blockage.3. Check the chemical solution pump for problems:
The chemical solution pump is the device that pumps the chemical solution from the injector to the sprayer. If the pump is not working properly, it can prevent the chemical solution from flowing properly. To check the pump, turn on the pressure washer and listen for the pump to start. If you don’t hear the pump running, you’ll need to troubleshoot the pump.

4. Check the chemical solution for compatibility:
Make sure that the chemical solution you’re using is compatible with your pressure washer. Some chemical solutions can damage the injector if they’re not used correctly.

How to Fix a Chemical Injector

If you’ve determined that your chemical injector is faulty, you’ll need to fix it or replace it. To fix a chemical injector, you’ll need to follow these steps:

1. Disconnect the chemical injector from the pressure washer:

2. Remove the chemical injector from the pressure washer:
3. Inspect the chemical injector for damage:
Look for cracks, leaks, or other signs of wear and tear. If you find any damage, you’ll need to replace the injector.

4. Clean the chemical injector:
Use a clean cloth to wipe down the inside and outside of the injector.

5. Reassemble the chemical injector:

6. Reconnect the chemical injector to the pressure washer:

If you’re not comfortable fixing the chemical injector yourself, you can take it to a qualified technician for repairs.

Preventing Chemical Injector Problems

You can help prevent chemical injector problems by following these tips:

Use the correct chemical solution for your pressure washer:

Never use a chemical solution that is too concentrated:

Never use a chemical solution that is too hot:

Never use a chemical solution that is too cold:

Clean the chemical injector regularly:

Inspect the chemical injector regularly for signs of damage:

By following these tips, you can help keep your chemical injector working properly and avoid costly repairs.

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