My Pressure Washer is leaking from the trigger/body of the spray gun

Quick Answer

If water is leaking from the trigger area of your spray gun, it usually indicates that an internal seal has failed and is no longer holding pressure when the trigger is operated.

If the leak is coming from the body or seams of the spray gun, this is typically caused by a small crack or pinhole in the housing.

In both cases, the spray gun will normally need to be replaced.

Before You Start

Before inspecting or using the spray gun, make sure:

• The pressure washer is switched off
• The trigger is released to remove pressure
• The hose is disconnected if safe to do so

Always:

• Inspect the gun in a well-lit area
• Check for visible cracks or water seepage
• Avoid using a damaged spray gun under pressure

Important: Do not continue to use a spray gun that is leaking, as it may fail completely during operation.

Common Causes of Spray Gun Leaks

Leaks from the spray gun are usually caused by:

• A worn or failed internal trigger seal
• A crack in the spray gun body
• A pinhole forming along the seam of the housing
• General wear from repeated high-pressure use

How to Identify the Issue

1. Leak from the trigger area

If water leaks when the trigger is pulled or released:

• This indicates an internal seal failure
• The pressure is not being contained correctly inside the gun

2. Leak from the body or seams

If water is visibly escaping from the casing:

• This suggests a crack or pinhole in the housing
• The spray gun will not be able to hold pressure safely

What You Need to Do

In both cases, the spray gun cannot usually be repaired and will require replacement.

Replacement options:

• If your machine is within warranty, a replacement spray gun can be supplied free of charge
• If your machine is out of warranty, a replacement spray gun can be purchased via our website

Important Advice

• Do not attempt to seal cracks or leaks with adhesives or tape
• Do not continue using a leaking spray gun
• Always replace damaged components before further use
• Regularly inspect your spray gun for early signs of wear

Frequently Asked Questions

Why is my spray gun leaking from the trigger?

This is usually caused by a failed internal seal that no longer holds pressure when the trigger is operated.

Can a leaking spray gun be repaired?

No, spray gun leaks are typically due to internal damage or housing cracks and require replacement.

Is it safe to keep using a leaking spray gun?

No. Continued use may lead to sudden failure and unsafe operation.

Do I need a new spray gun?

Yes. If the leak is coming from the trigger or body, a replacement spray gun is normally required.