≡ Menu

How to Fix a Pressure Washer Pump in Easy Steps

How to Fix a Pressure Washer Pump

How do you fix a pressure washer pump? A Pressure washer pump is one of the essential parts of the machine. If it is not working correctly, the whole system can be thrown off. Luckily, there are some easy steps you can take to get your pressure washer pump back up and running like new.

We will walk you through easy steps to fixing your pressure washer pump: Check the oil level in the pump, Inspect the pump for leaks, check the pressure washer hoses, and Inspect the nozzle, finally pump is still not working properly, take it to a qualified technician for service.

Pressure Washer Pump Parts

To fix a pressure washer pump, you will need to identify the parts that may be causing the problem. The most common issues with pressure washer pumps are leaking seals and worn-out o-rings. Other parts that can wear out or break include the piston, cylinder, and connecting rods.

Other Parts are the Pump Housing, Pressure Relief Valve, Unloader Valve, Inlet Screen, Outlet Fitting, and Water Inlet Fitting.


This process is simple and can be done in just a few minutes. So, if your pressure washer is giving you trouble, follow these steps and get it up and running again in no time!

Check the oil level in the pump:  Most pressure washer pumps have an oil reservoir that needs to be checked periodically to ensure it is full. If the oil level is low, add more until it reaches the “full” line on the dipstick.

Clean the inlet filter: Over time, debris can build up in the filter, restricting water flow to the pump and causing it to work harder than necessary. To clean the filter, remove it from the housing and rinse it with water.

Replace the O-rings: The O-rings are responsible for sealing all moving parts in the pressure washer pump. If they become damaged or worn out, the O-rings must be replaced. To do this, simply remove the old O-rings and replace them with new ones. Check out the pressure washer repair resources at Toolbarn.com by following this link: Toolbarn.com Repair Resources.

Lubricate the pump: To keep the moving parts in the pressure washer pump lubricated, add a few drops of oil to the reservoir. This will help to prolong the life of the pump.

Prime the pump: If the pressure washer is not working properly, it may need to be primed. This simply means adding water to the pump to build up enough pressure to function correctly. To prime, the pump, turn off the engine and remove the hose from the inlet port.

Place one end of a garden hose into a bucket of water and then place the other end into the inlet port. Turn on the engine and let it run for a few minutes until the water starts to flow from the hose.

Inspect the piston, cylinder, and connecting rods for damage and replace any damaged parts.

Following these simple steps should help you fix a pressure washer pump quickly and easily. If the problem persists, however, it is best to consult with an experienced technician to ensure the issue is resolved correctly.

How To Take Apart A Pressure Washer Pump

If you need to take apart your pressure washer pump, follow these steps:

1. Remove the pressure washer hose from the pump.

2. Unscrew the bolts that hold the pump housing together.

3. Lift off the pump housing and remove the piston from the inside.

4. Inspect all parts for damage and replace any damaged parts.

5. Clean all parts with soapy water and dry them completely before reassembling the pump.

6. Reattach the pump housing and screw it back into place.

7. Reconnect the pressure washer hose to the pump.

8. Test out the pressure washer to make sure it

Final Words

If your pressure washer pump is not working properly, do not despair. In most cases, you can fix the problem in just a few simple steps.

By following the tips outlined above, you should be able to get your pressure washer pump up and running again in no time.

Related Contents