If your pressure washer isn’t working as well as it used to, the cause may be an aging or failing pressure washer pump. Luckily, this doesn’t mean your entire pressure washer is done! All you have to do is replace the pump with a manufacturer-approved part. And fortunately, the pump is one of the easiest parts to replace on your power washer, particularly with ready-made pumps, which take the guesswork out of what parts you need and cut down on time and effort.

How can I tell if my pump is failing?

Pressure washer pumps create the water pressure that comes out of the spray nozzle, so if your pump is failing or damaged, you will likely experience low water pressure at the nozzle.

How does a pressure washer pump get damaged?

Detergent residue left in the pump can damage it, as can air in the inlet water supply. Make sure there is no dirt or other build-up obstructing the pump too. Be sure to maintain your pressure washer and keep it clean to help increase the longevity of all the parts. Running hot water through a pressure washer not meant for hot water can also overwork the pump and other parts.

Do I need to replace my entire power washer?

If the rest of your power washer—including the engine, wand, and other components—are still in good working condition, you probably only have to replace the pump, which can not only save you money but quite a bit of a headache as well!

There are two types of power washer pumps: axial pumps and triplex pumps. If your power washer is using an axial pump, you will have to look at replacement options. If your power washer is using a triplex pump, there is a change you can repair the pump without replacing it. But with either type of pump, the entire power washer doesn’t have to be replaced.

How do I find the right pump for my pressure washer?

If you’ve determined your pressure washer’s issue to be the pump, these tips can help you find the right replacement pump for your pressure washer:

  1. Find out the exact pressure washer pump that is used in your model
  2. Find the diameter size for the shaft and if it is hollow or solid.
  3. Look at how the current pump operates with the motor. What attachments does it have? What are the bolt patterns? Be sure to pay attention to the pump’s orientation in respect to the engine.
  4. Find out whether your pump is vertically or horizontally shafted.

With these simple troubleshooting steps, you can replace your pressure washer pump with a ready-made pump and get back to your business before you know it!