How do I clean the pressure washer pump?

Maintaining your pressure washer ensures that it operates at peak performance and extends its lifespan. A crucial component that often needs attention is the pump. So, how do you clean the pressure washer pump? In this blog post, we will provide a detailed step-by-step guide to help you clean your pressure washer pump efficiently and safely.

Why is Cleaning Your Pressure Washer Pump Essential?

A clean pressure washer pump can improve your machine’s performance, increase its life expectancy, and prevent costly repairs. Dirt, grime, and mineral build-up can cause the pump to work harder, reducing its efficiency and leading to potential damage.

Steps to Clean Your Pressure Washer Pump

  1. Safety First: Ensure you have unplugged the pressure washer from the power source. It’s also essential to wear protective gear, such as safety goggles, gloves, and closed-toe shoes, to protect yourself.

  2. Disconnect the Hose and Nozzle: Remove any attachments like the pressure washer hose and the nozzle before you start cleaning.

  3. Release Pressure: Any trapped pressure can be dangerous. Open the spray gun to release any remaining pressure in the system.

  4. Drain the Oil and Water: Before cleaning the pump, you’ll need to drain the oil and water from your pressure washer.

  5. Clean the Inlet and Outlet Ports: Using a cleaning tool like a wire brush, clean the inlet and outlet ports to remove any dirt or debris.

  6. Use a Pump Cleaner: Use a commercial pump cleaner or a homemade solution of white vinegar and water to clean the interior of the pump. Fill the pump with the cleaner, let it sit for about 15 minutes, then flush it out with clean water.

  7. Refill the Pump with Oil: Once you’ve cleaned the pump thoroughly, refill it with fresh oil according to the manufacturer’s instructions.

Tips to Keep Your Pressure Washer Pump Clean

  • Regularly clean your pressure washer pump to prevent build-up.
  • Always use clean, fresh water in your pressure washer to prevent contaminants from entering the pump.
  • Use pump saver products after each use to maintain the seals and pistons and prevent mineral deposits.


Regularly cleaning your pressure washer pump can improve its efficiency and extend its lifespan. It may take a little effort, but the result will be a pressure washer that performs at its best, saving you time and money in the long run.