Simply turn off your pressure washer and disconnect the hose. Keep your garden hose attached and allow water to run through it for 20-30 seconds. Turn off your garden hose and reassemble. Try using your pressure washer as normal and see if that fixes the pulsing.
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.Jun 7, 2016
What is the most common problem with pressure washers?
Many pressure problems begin and end at the unloader. A cracked o-ring, dirt caught in the spring or a stuck shaft are the most common issues solved by simply removing the unloader and cleaning/looking for issues.Jul 5, 2017
How does pressure washer unloader valve work?
A pressure washer unloader valve diverts the water flow through the bypass when the trigger on the gun is depressed. ... The trigger shuts off the water flow, causing the unloader valve to re-circulate the water back to the header tank or alternatively back to the inlet side of the pump.Jun 8, 2016
Can a pressure washer explode?
It is not uncommon for leftover air in a pressure pump to "explode" and completely destroy the pump. This kind of air explosion in a pressurized water system is called cavitation.
Why would a pressure washer pulsate?
Why is my pressure washer surging? Water flow may be restricted to the pressure washer. Check that all hoses are free of kinks, leaks, or blockage. ... If the nozzle has even a little bit of dirt in the tip, it may cause enough obstruction for the pressure washer to pulsate.