Why do pressure washer pumps fail?

The two most common reasons behind the pressure washer pump going bad are a faulty unloader valve and a clogged carburetor (in the case of gas-powered washers).
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How long do pressure washer pumps last?

How long will a pressure washer pump last? I general, a good, properly used pressure washer pump should last for 5 to 10 years. Some cheap pumps can last significantly shorter. To get the best from your pump, be careful with overheating, cavitation, and using it with the wrong unloader valve settings.
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Why do washer pumps fail?

A pump can fail in two ways: mechanically and electrically. A mechanical failure can be caused by a foreign object caught in the pump, or direct damage to a pump component, such as the impeller. Inspecting the pump can often reveal a mechanical failure. An electrical failure can be diagnosed by using a multimeter.
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Can you fix a pressure washer pump?

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. Axial cam pumps are less expensive and produce enough PSI to tackle most homeowner jobs, but they don't last as long.
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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.
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How to tell if your pump is bad on your pressure washer. (Pressure Gauge)

Why do pressure washers lose pressure?

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.
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Why is my power washer pulsing?

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. If not, you can use a pin or paper clip to clear the nozzle tip of debris that may have become lodged in it.
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How do you know if your washer pump is bad?

You can check by looking for a few signs that a pump is dying or already dead.
  1. Start the washer and wait for the washer tub to fill with water. If you do not hear water or hear a motor whirring, the washer motor may be dead.
  2. Open the washer lid in mid-cycle. ...
  3. Wait for the washer to finish its cycle.
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How do power washer pumps work?

A pressure washer is less sophisticated than it sounds. It's really just a water pump powered by an electric motor. The washer takes in ordinary water from a faucet (that's a tap to you folks in the UK), the pump accelerates the water to high pressure, and then squirts it from a hose at speed through a trigger gun.
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How long can I run a pressure washer without water?

Generally, it is bad to leave a pressure washer running for more than five minutes. If you cannot switch it off after a minute or three, do not idle the unit for more than five minutes. Leaving your pressure water running will damage its inner workings because as temperature builds up, the pump is at risk of damage.
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What type of pump is best for a pressure washer?

Triplex Plunger Pump

Professional level pumps use triplex pumps because it allows very high pressure and can run for thousands of hours before any maintenance.
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Is it worth buying a pressure washer?

Even if owning a pressure washer is technically cost-effective in the long run, the hassle of storing and maintaining one might not be worth the money you save. Owning a pressure washer is kind of like owning a lawnmower—they take up a lot of space, require maintenance, and you have to winterize them.
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Can you run vinegar through a pressure washer?

Some people like to use a mixture of water and vinegar in their washers. White vinegar is the strongest and can be used with the pressure washer. The toughest stains should be cleaned with white vinegar.
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What is the unloader valve on a pressure washer?

A pressure washer unloader valve diverts the water flow through the bypass when the trigger on the gun is depressed. The Unloader valve is designed to respond to an increase in pressure or a change in water flow. The unloader valve can also be used for adjusting the pressure of your machine.
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What happens if you run a pressure washer without water?

Using pressure washers without water is risky and can damage your machine. The water helps to cool the pump, and without it, the pump can get overheated and breakdown.
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How often should you change oil in pressure washer?

If you purchased a brand new pressure washer, it is recommended that you change the pump oil after 30-50 hours of operation. After that it's 300 hours or once a quarter. If you plan to use your machine frequently, you'll want to do routine maintenance on it and change the oil at least every three months.
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Are all pressure washer pumps the same?

No — they are not. Some state that they're universal, but the reality is that they only work with the majority. You should always check the dimensions of the pump against your pressure washer to make sure they're compatible. You must also check the PSI and GPM as matching up varying specs will give you poor results.
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How long can a pressure washer run without pulling the trigger?

DON'T Let the Machine Run Too Long Without Pulling the Trigger. Pressure washers operate under pressure, and that pressure needs to be released by pulling the trigger. If you let the machine run for two minutes or longer without spraying water, then you could damage the pump.
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Are general pressure washer pumps good?

General Pumps seem very good. Those pumps used mostly on commercial pressure washing units. That's because they're cheap. They hold up pretty well on units fed with pressure and have the water heated after the pump, but they just don't last with gravity-fed hot water.
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