Why does the pressure washer cuts off when spraying? When washing your car, you’re probably wondering why your pressure washer cuts out. Your hose is getting dirty, so it doesn’t want to spray water. In this blog, we also have an article about best value commercial pressure washer that you might want tor read about it.
Pressure washing or power washing is the use of high-pressure water spray to remove loose paint, mold, grime, dust, mud, chewing gum and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces.”Wikipedia.org
What is pressure washer
A pressure washer is a machine used to clean the surfaces of the house, car, and other buildings. It is one of the most important tools that you can use to maintain your home and your vehicle. This is because it cleans the surfaces of your house or car in a better way than normal cleaning methods. A pressure washer will help to remove dirt stains, grime, molds, and other stubborn materials from any surface.
A pressure washer or power washer is a high-pressure mechanical sprayer used to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces.”gz-supplies.com
Types of pressure washer
There are different types of pressure washers available in the market today such as garden sprayers, floor cleaners, car wash machines, and even concrete cleaners. Pressure washers are very versatile when it comes to cleaning because they work for all kinds of surfaces. They are able to cut through tough layers like concrete, metal, and even glass. You must be careful though if you want to use this machine. Make sure that there are no sharp objects around before using it.
Why pressure washer cuts off when spraying
So, why pressure washer cuts off when spraying? If your pressure washer cuts off when the trigger is released, the unloader valve is faulty. There are a few difficulties with your unloading valve that are causing the engine pump to stall. This problem’s troubleshooting is rather straightforward, and you may solve it on your own.
How to Fix It
The First Step
Unplug the unloader valve from its bay using a wrench and a screwdriver. First, remove the valve holding pin that connects the unloader valve to its bay. Generally, most pressure washer manufacturers leave the unloader valve exposed. There is no need to be concerned about locating the retaining pin even if you have the most powerful pressure washer, such as the top 3000 psi pressure washers. The retaining pin resembles a U-shaped pin (a common shape for most of the pressure washers). Insert your screwdriver into the retaining pin and pull up to unscrew it.
Pull the unloader valve from its bay using the screwdriver. A little tug is all that is required. The piston that regulates the pressure retention is a key component of the unloader valve. When you use the pressure washer, this piston goes forward and backward. If the piston cannot move freely, the pressure washer will shut off. Inspect the piston to see whether it is readily moving or if it is having difficulty moving.
If the piston is freely moving, skip this step and go to the next. You must work on your piston if it is not moving freely. Remove the piston from the unloader valve. Unscrew the nut that connects the piston to the valve using your tool. Unplug the unloader valve’s spring and piston. Now, use alcohol or kerosene to clean the spring and piston. After that, use a decent silicone lubricant to lube the spring and piston. Return them to their original locations. This will enable the spring and piston to function smoothly.
Depending on the work, the unloader valve may be configured to create pressure. Check the valve setting to verify it is proper. Perhaps your unloader valve is set too high, stacking the engine when the trigger is released. To cycle water back to the intake side, your unloader valve must be opened. When the valve fails to open, excessive pressure builds up, causing the engine to stall. As a result, if necessary, modify your unloader valve setting.
The pressure washer may sometimes stop off owing to an issue with the O-rings. O-rings, often known as washers or seals, are used in your unloader valve. If the O-rings are damaged, degraded, or in such bad condition that they are unable to seal the oil pump, your unloader valve may fail to function correctly. Replace the O-rings with the correct size. This will guarantee that the oil pump is properly sealed.
Inspect the pressure gun for usability. If it is not in functioning order, just adjusting the unloader valve may not provide the desired results. Adjust your pressure unloader valve and think about getting a new pistol.
If you have completed the above procedures but the issue persists, try the following:
- Examine and clean the air filter
- Alcohol should be used to clean the spark plug.
- Examine the water inflow.
- Examine the wand screens
If everything is operating well but the issue persists, see a local expert or try purchasing a new unloader valve.