Question about Karcher 2500 PSI Pressure Washer

4 Answers

Karcher K4 Hello, just cleaning my patio been using it for two days and it has stopped pressuring up, water comes through the lance but there is a humming noise coming from the unit when switched on, weather the trigger is pulled or not. Thanks for your time hope you can help. Regards Gareth

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  • Gareth Waters Jun 10, 2008

    Hi, thanks for replying, I got it wrong the number is K2 94M. Hope this help[s.
    Many thanks
    Gareth

  • Anonymous Mar 20, 2014

    why is there no water pressere fro the lance when trigger is activated

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4 Answers

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It sounds as if you might have an air lock/air bubble in your pump circuit. If you've not already done so, try holding the trigger on your high pressure nozzle for several minutes with the engine OFF. (just your water pressure forcing water through the unit) Repeat this a couple of times, if necessary. If an air bubble is the problem, this should clear it. The only other thought I have is one of your household water pressure...is it adequate? Low water pressure at your faucet could also be a factor. Consult your manual. It should specify the minimum pressure for your washer to function properly, probably stated in gallons/minute.
if this solution helps you any way rate it as "fixya". feel free for further assistance. thanks for using fixya

Posted on Jun 10, 2008

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Check for a leak somewhere, either somewhere in the pipes or in the trigger / gun.

Posted on Jun 10, 2008

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May i know the exact model please...?

Posted on Jun 10, 2008

  • micromaster
    micromaster Jun 10, 2008

    check the unit transformer...

  • micromaster
    micromaster Jun 10, 2008

    its is possible that the humming sound was coming from any of the trnasformer or in the powersupply area..., this will happen for such overloading in the electricity while the unit never meets it normal performance..

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Think it must be faulty power

Posted on Jun 10, 2008

  • dewan nafees ahmed Jun 10, 2008

    did u try a different power plug

  • dewan nafees ahmed Jun 10, 2008

    your unit uses a 1900W motor.

    this humming noise is from the motor.

    this is my view.

    motor is trying to start.
    but it is not able to.


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