What to do when your pressure washer is leaking water from the pump

Person using a pressure washer to clean a stone patio.
(Image credit: Getty)

Pressure washers are a fantastic way to give your home that wow factor. But it can be a nuisance if your pressure washer isn’t performing. We’ll walk you through what to do when your pressure washer is leaking water from the pump. 

Learning basic troubleshooting skills can boost your confidence. Pressure washers are powerful machines. You’ll want to assess whether your pressure washer has a serious problem to protect yourself.

We’ll guide you through what to do when your pressure washer is leaking water from the pump. You'll learn how to locate the source of the leak and rule out other problems. 

If your pump is broken, it may be time to invest in one of the best pressure washers (opens in new tab). And if you're set on upgrading one of your outdoor tools, exploring some cheap pressure washer deals (opens in new tab)will help you find a price and model that works for you. 

For now, we’ll cover what to do when your pressure washer is leaking water from the pump. 

What to do when your pressure washer is leaking water from the pump 

What the expert says...

Scott Reid, Exterior Home Expert at Angi (opens in new tab), recommends, “If you want to pressure wash your home yourself, be sure to get very familiar with your pressure washer by reading the manufacturer’s instructions and recommendations."

Unsure what to do when your pressure washer is leaking water from the pump?

After checking the manufacturer's guidelines for your model, the next step should be to locate the source of the leak. It won’t necessarily be the pump. In most scenarios, leaks spring from where you attach the hose. If this is the case, grease the gasket or replace it if it’s beyond repair. 

Another common source of problems is a loose connection. Turn off the water supply and tighten the connectors to rule this out. 

Check whether the hose is leaking. A damaged high-pressure hose can be dangerous - you will need to replace it. 

The o rings are another common culprit behind leaks. If they’re damaged, they will need replacing. 

Finally, assess whether water is escaping from the pump. Cracks are a telltale sign. Discontinue use immediately to protect yourself. At best, a damaged pump results in low pressure, and at worst, it can result in an explosion. 

According to manufacturer Simpson (opens in new tab), you should call in a pro if your pump is the source of the leak. If your pressure washer is beyond repair, it may be time for a replacement. 

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Louise Bond is a UK-based writer specializing in health and wellbeing. She has over eight years of experience in management within health and care and brings this passion and expertise to her writing. Louise has been published in The Guardian, Live Science, Fit & Well, Tom’s Guide, Planet Mindful, Breathe, and Psychreg. She is at her happiest when she is out in nature, whether that’s on an invigorating hike or pottering in the garden.

With contributions from