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Why does my pressure washer lose pressure?

4 min read

Asked by: Anthony Chow

A Worn Nozzle Using an old, worn-out nozzle is a common cause of lost pressure, and also has one of the simplest fixes. All you need to do is replace the nozzle and make sure you’re using the proper size. Don’t go by the color of the nozzle, make sure you check the orifice size.

What causes pressure washer to lose pressure?

There could be small leaks, holes, or tears in your garden hose or high-pressure hose that are causing your pressure washer to lose pressure when you pull the trigger. If you find leaks, plug the holes or replace the hose, which should solve your pressure issues.

How do you fix low pressure on a pressure washer?

You can fix this problem by simply cleaning the nozzle and of the nozzle is too torn out then replace it. Sometimes dirt also gets stuck in the wand that results in low water pressure so check the wand as well and if there is any leakage in the wand then seal that area or replace it.

What is the most common problem with pressure washers?

Like all machines, pressure washers sometimes break down. These malfunctions take several forms, but in general, they fall into two categories: engine issues and pump or wand issues.

What causes a pressure washer to pulsate?

Clear any debris from the nozzle. If the nozzle has even a little bit of dirt in the tip, it may cause enough obstruction for the pressure washer to pulsate. If your pressure washer came with a nozzle cleaner, use it to clean the tip.

How do I adjust the pressure on my pressure washer pump?


We can adjust the pressure output of the pressure washer by either turning this dial in or out turning cranking it in turning it clockwise turns. The pressure up turning a counterclockwise turns.

How do you bleed a pressure washer?

How you do this you connect your garden hose to the inlet cover making sure the high-pressure hose is detached from the front. Run the water through the system Michael.

How do you know if your unloader valve is bad?

Water leaks and inconsistent behavior are also signs of a potential failure in the near future. González: The typical signal when there is an unloader malfunction is a reduction of flow through the nozzle, which results in pressure loss. Dean: Typical symptom of an unloader failure is a sudden smooth pressure loss.

Why is my pressure washer revving up and down?

The engine of your pressure washer may rev sporadically because it is experiencing an intermittent blockage of the air that it needs to function properly. The first thing that you should do is to check the air filter for clogs caused by debris or dirt. Clean out any clogs that you find and the erratic revving may stop.

How do you fix pulsating water pressure?

How to Stop Pulsating Water Pressure

  1. First shut off electrical power to the water pump system.
  2. Then, drain the water both from the pump system and the pressure tank.
  3. Find the air bladder valve, which looks similar to that of a tire.
  4. Unplug the valve and insert a pressure gauge into the valve to measure the air pressure.

How can I make my pressure washer more powerful?

In general, a pressure washer can be made more powerful by using a different nozzle. Other options are changing the pressure regulator or under loader valve, use a different gas type, or optimizing the gas engine. For maximum power, use a red 0-degree nozzle. Nozzles determine the angle of the output water stream.

How many hours do pressure washers last?

In general, most well know pressure washer companies guaranty their machine for at least 500 hours. Most persons use it for around 50 hours each year. That means that a well-maintained pressure washer should last at least 10 years.

Can I put a higher psi pump on my pressure washer?

Your new pump must be compatible with your pressure washer. You can’t replace your pump with any pump you wish, because they just won’t fit. Determine if your pressure washer uses an axial or triplex pump.