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Powerwasher pw1800u The motor turns on, squeeze the trigger and water comes out, but there's not any pressure... Help??

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The water pump is pretty much shot! Did you crank the pressure washer without the water being on? Most times you see this when this occurs.

Posted on Aug 25, 2013

  • Michelle tindol Aug 25, 2013

    Also, it could be the uploader valve or pressure valve... To check this turn on the pressure washer pull the trigger once.. Now take the tip off the top of the gun and squeeze water out again now, put the tip on. If you have pressure then it's the valve if you still have no pressure could be the pump.

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Posted on Jan 02, 2017

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SOURCE: sometimes when I squeeze the trigger I will have high pressure

The bypass valve is sticking.

Posted on Sep 23, 2009

  • 21 Answers

SOURCE: low pressure from powerwasher wand when trigger

THIS POWER WASHERS ARE TRICKY, TO OPERATED YOU NEED TO OPEN THE WATER FAUCET CONECTED BY A HOSE TO THE POWER WASHER , OPEN THE TRIGGER AND THEN START THE POWER WASHER, OTHER WISE YOU WILL RUIN THE POWER WASHER PUMP.

Posted on Nov 01, 2010

  • 2428 Answers

SOURCE: My Briggs and Stratton Power

Ican see im going to have to wright this whole thing again . This sight is not good for people like me who know the answers . Something always pops up and loose my well thought massage . like the one i just wrote to you . Briggs olny makes the engine on your mechine you have 3 to 4 differant other companys that make all of the other parts this makes it diffelculy for anybody to get parts for the mechine . But there can olny be two things wrong with this mechine . The first is you have a problem with the valves on the pump body . Do you see brass caps on the valve body remove them one at a time . Check the valve you can remove them with a small pair of niddle noise pilliers look at the plastic cages around the valves they tend to break and jam the valve seats it olny takes one to cause this condution you describe . The other thing it could be is the unloader valve is stuck . This is the part under the pressure control knob and you will need to remove it . What it dose is allow the presserized water to recurlicate back through the pump body when the trigger is not open . This could also cause this condution . Most of the time it can be freed up with some WD40 and most are not servicable as a unit and lots of luck trying to find one .But the chances are good you can free it . In the winter time you should put antifreeze in the mechine disconnect the plug wire pull the cord until it comes out the other side this will protect it from the water freezeing and expanding and damageing parts aswell as corroition . Well good luck from what you descriped the valves but you should also turn that pressure knob in and out on a regular baicis to keep it free

Posted on Jun 08, 2011

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Hi, W/D here.
Leave the water on, and hold the trigger down for about 5 minutes to get all of the air out of the system. Letting off of the trigger occasionally and then opening it up will help displace any air in the chambers. While still holding the trigger down, start the washer. Should put up your desired pressure.
Best regards, --W/D--

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