Having problems with your Pressure Washers ?

Karcher K3.99 Comes on but high pressure doesn't work

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Repair Help & Product Troubleshooting for Pressure Washers

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Karcher K3.99 Comes on but high pressure doesn't work

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I have a KARCHER Model K 2401 which onstart up has normal water pressure rather than the high. I can usually get it to work by removing the tip, pressing the trigger and running some water through without the tip on. The i replace tip and it will usually retain the high pressure. If I stop depressing the trigger I have to go through these same steps. It is like it loses prime. It works well once I get it started putting out the high pressure.

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I have a Karcher 3.99 Pressure Washer. The motor appears to be working and water is passing through the machine when turned to the detergent application setting. However when the lance is tightened to turn on the pressure, no water is coming through. The Karcher is just over 1 year old David

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Hope u can help when the karcher is conected up and the trigger on the handle is not depressed the machine makes a noise like its trying to presureise the hose it keep kicking in and out i have lost the pressure although it works its not a high enough pressure to be effective

The power washer stops when the gun is closed. This happens because pressure is exerted on a control valve (Spill Valve)...which in turn touches a micro switch and cuts electricity. Now most probably your machine is kickin in an out because the spill ... Karcher K2.26 Electric Power Washer

When i turn my pressure washer on it works for a few mins then smoke comes out of it and it cuts off. i bought it last year and only used it once and this happened when i have tried to use it this year. its a karcher pressure washer thanx

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My Karcher K2.36 stopped working. I had been cleaning the pathways and with no warning, no peculiar noises, etc the unit motor stopped working. The power was connected, the water was still coming from the wand albeit at low pressure. Thanks.

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The karcher pressure washer was working one day then just stopped working the next day .Thepower light comes on when i press the on switch but nothing happens .So the power is getting to it but will just not fire up .Please could you advise

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Hi, my Karcher steam cleaner is working ok apart from the burner does not come on to supply hot water. Got ok pressure from the lance but cold only. Plenty of fuel, it was working recently and it is stored inside, any ideas please?

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I have Karcher 520m and when you press the trigger you can hear what sounds like a relay engaging but there is no water pressure, then it will fire up and work, but next time you press the trigger the same thing happens, I have been using it on harvested water, but even connected to the mains it does the same thing. Its now got to the stage it doesnt want to work at all.

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I have a Karcher 3500 hd with a 2.1 head. Machine has always worked well but lately it has been pulsating. High pressure then low... repeat. I have checked valves and they seem fine. Any advise would be great thx.

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Karcher 2.56 keeps pulsing on and off whenever high pressure nozzle is attached. I have tried different nozzles and same thing is happening. when i press the lance without any attachment it works fine

Make sure you have bled all air from the system. Also make sure you have sufficient water supply; if house water pressure is too low or if your hose is too long or doesn't allow full flow, you may not be getting enough water to the unit. ... Karcher Pressure Washers

Hi I have a karcher 360 thats working fine with everything from the water side of it but it has lost its pressure and only comes out like a hose, can you please advise of the problem...... Thanks Geoff

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No high pressure. has been a consistant problem for a while. Was able to get high pressure to "kick-in" before by removing nozzle, squeezing trigger to "prime" high pressure, then quickly put nozzle back in then it would work. now it doesn't work at all.

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Karcher 520M Pressure washer won't operate at high pressure

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