Pressure Washer Repair | DIY or Professional?

Depending on how you use your pressure washer, sometimes it can break down, lose a part or wear out some of its components.

If this happens, it does not mean that you should fork out your hard-earned cash for another pressure washer.


Investing in a new pressure washer is an expensive venture. Fortunately, you can bring your cleaning equipment back to life. 

How do you go about it?

Should you choose a DIY or professional repair service?

How do you choose the right service provider?


Does your pressure washer have a problem?



It is important to know how to diagnose your equipment.

Otherwise, it will be difficult to conduct a repair or call on a professional to fix the item. It will be helpful to understand the factors which influence the performance of your power washer. Lack of adequate power can lead to pressure drops and eventually poor performance.

It is, therefore, important to check that the power washer is connected to the appropriate power supply.


The second factor affecting the performance of your cleaning equipment is inadequate water flow.

Every pressure washer is designed for an optimal water flow. Usually, it is expressed in gallons per minute (GPM). Therefore,  check if your pressure washer is running at the correct GPM. This can save you the cost of calling a professional for a repair that you could have completed.


Dirt accumulation will impact the operation of your pressure washer.

The intake valve, regulator, pump valves, the unloader, the outlet hose, and nozzle are areas that attract grime. If the valves are clogged, they are likely to affect the performance of a pressure washer. Blocked nozzles affect the water flow and discharge pressure. This is a simple repair, which may be effected through flushing the equipment with water.


The flow of air into the pressure washer could cause more harm than a dirt blockage. If there is a large volume of air in the pressure washer, it can reduce the pump discharge pressure. In some cases, it can lead to pump cavitation.  Expel the air from the system through a bleed valve.


Other obstructions, apart from dirt or air, along the path of water can be troublesome for your pressure washer. They can include, but are not limited to, sand, crooked hoses, debris in the intake filter, and foreign material in the nozzle. All these can hamper the performance of the pressure washer.


If your pressure washer has mismatched components or parts, its operation may be affected. It is important that the parts in the machine fit the specifications in the manual. The most sensitive parts include the nozzle, gun, unloader and regulator. If there is a mismatch of the components above, it will most likely cause a problem.

Leaks also influence the performance of a pressure washer. If there are leakages along the water path, they will affect the overall water discharge pressure. Check the guns and hoses for water leakage. Furthermore, if the unloader valve is not adjusted correctly, it can also influence the pressure washer.


Do not use hot water on a machine model that is not designed to accommodate the higher temperature.

Also, if the oil is not regularly changed, as required in the gas-powered models, it can lead to problems. Refer to your operating manual for the oil specifications and replacement frequency.


If the drive belt is loose or there are worn components, the pressure washer will not function properly.


DIY vs. Professional Repair Services


Now that you know the performance killers of a pressure washer, do you choose the DIY option or seek the assistance of a professional?

It's obvious that the DIY approach saves money. However, unless you understand the various parts and the working of a pressure washer, you certainly do not have to undertake the risk of repair.

There are certain repairs which can only be performed by a professional. You've invested a lot of capital in your pressure washer - trust an expert to properly maintain it.


A professional pressure washer repair person will not need much time to diagnose the machine’s problem.

They have the proper training. They will provide the necessary tools, and they trained in the safety aspects of the repair process.

You may not have the correct tools or the proper skills to conduct the repair on this high-energy machine. This can be dangerous; you should leave the work to professionals. You will part with some money, but it will be worth it in the long-term.

Always make sure that the professional service provider you select has the skills, and exhibits good customer service and adequate experience with your machine model.


How to care for your pressure washer


Considering the cost of some pressure washer models and that of contracting repair services, you need to maintain it to ensure longevity.

Let’s look at some of the things which can extend the lifespan of your pressure washer.

First, before every use, make sure the o-rings are in good condition.

Properly tighten all nozzles. You should also ensure that the nozzles are clean.


Where you are using a gas-powered pressure washer, be sure to refill it with fresh gas, and use a fuel stabilizer.

Check your inlet water flow, pressure and temperature. As mentioned earlier, the correct inlet water flow is necessary for optimal machine performance.


When you finish using the pressure washer, always unplug it from the power terminal.

Then, clean up the detergent dispenser compartment (if applicable).

Wash the inside of the pressure washer to remove any accumulated dirt.

Before you store your machine, make sure it is completely dry to prevent mold growth.

Lastly, keep it in a place where it cannot be affected by extreme weather elements.


You now have a general troubleshooting overview for your pressure washer.

Please read our product reviews for more detailed troubleshooting guides.


In summary, you can perform the repair yourself, or you can choose a professional. Unless you are properly trained, the latter option is recommended.

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