Question about Karcher K 5.85 M Electric Pressure Washer

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Karcher K 3.96 M will not build pressure - Karcher K 5.85 M Electric Pressure Washer

Posted by Anonymous on


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: karcher 2500 no pressure problem

sounds like you have an inlet blockage to the pump or not enough volume to feed the pump. make sure hose is turned full on when washing and see what happens. if not you may have to remove adapter wher hose screws in and check for a blockage.

Posted on Apr 21, 2009

  • 100 Answers

SOURCE: Our Karcher pressure washer just quit working, so

It really depends on the model of the machine, can you provide us with the model number?

Posted on Oct 29, 2010

  • 92 Answers

SOURCE: Tried to use my karcher

Dear jingles 2,
I am assuming that the electric motor turns and that the pump works also. I always try a test by removing the gun and try the machine without a gun...but very important with water being fed. NEVER run a power washer without water supply!! I remove the gun to test without load.
Now most probably your machine just the same will not build up pressure. If without gun attached, it builds up pressure...... you will surely see the difference.
Now if there is no pressure it could be a problem with the valves. To check this put on the machine with water being fed and without gun. Try to block the outlet with your hands or 2 figers ( HOPING YOU HAVE SAFETY ELECTRICAL SYSTEM!!!!).....if you feel from this outlet that your fingers are being sucked....then the suction valves need changing. There are 3 valves for suction (and other 3 for delivery)....if only one of them got stuck open, maybe with some dirt...the machine loses power.
You can test the other 3 valves by putting you fingers on the inlet for a few seconds....if you feel pushing...inlet valves are also faulty.
Loss of power could also be to a faulty regulating valve (Spill Valve). I rarely service spill valves...I always change with a new one. In fact if I service the Valves I change the spill valve.....and if I service the spill valve I change the valves. Ofcorce all gaskets must be changed.
If you are going to service your have to open the cover (using a Torx screw driver T15)....then you locate the head. If you remove the head there is oil, which also have to be renewed.
The spill valve you find where you see 2 wires coming out from a place near the head. This calls for special Technician know how....but if you have the tools and spares is childs play.
I wish to add hat if a valve is found blocked but not may not need to change the three valves. Check the valves by putting water into them placing them upside down....if by gravity the water escapes the valves need changing. Important that all 6 valves I advice to change if there is a doubt. Also before doing this did you check if the machine still stops when closing the gun? In fact I doubt it, because of the problem you mentioned.

Posted on Apr 24, 2011

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1. check water pressure comming out of the the spicket.
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If all is ok I would guess the pressure pump has gone out that's the noise you hear pulsating trying to build up pressure.


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sounds like you have an inlet blockage to the pump or not enough volume to feed the pump. make sure hose is turned full on when washing and see what happens. if not you may have to remove adapter wher hose screws in and check for a blockage.

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