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Pressure washer, john deere 3000 psi, honda engine

Engine runs fine, no problem, water pressure builds up and then goes down up and down sometimes it will be fine for 15 sec then no pressure,

thanks

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  • Anonymous Mar 03, 2009

    THE PRESSURE WASHER HAS NO PRESSURE AT ALL IT COMES OUT OF THE WAND AS IF IT WAS COMING STRAIGHT OUT OF THE FAUCET

  • Efrain Vazquez Jun 25, 2013

    you need a new pump

×

2 Answers

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It sounds like your intake is plugged with debris. What usually happens is a water hose that has been laying around will get various stuff in it -- dirt, grass clippings, small insects (and whatever they take into it nest building). These days most homeowner pressure washers do not have a proper inlet filter, but just a screened hose washer like on a washing machine. The unloader valve can cause pressure variance, but usually not in the manner that you described. The pump is being "starved" for input water. Just use a pair of needle-nose pliers and pull out the screen and clean it or replace it.

Posted on Feb 21, 2012

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Pressure variance is caused by the unloader/pressure regulator valve or slipping belt on belt drive systems. Worn packings in the unloader will not maintain pressure. Try lowering the pressure to 1000 psi then slowly increase until problem reveals then lower pressure again to maintain steady stream. This problem can also develop if the wrong size tip is used in the gun. Example, if output rating is 3000 psi at 4.5 gal per min and you are using a tip for 3000 psi at 4 gpm. The unloader will release causing variance of pressure. Easy way to lower pressure of system is to increase the size of the tip to 5 or 5.5 gpm in a system rated at 4.5 gpm. Enjoy

Posted on Dec 02, 2008

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