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Thread: Pressure Washer Fault..

  1. #1
    Regular Member macdad's Avatar
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    Default Pressure Washer Fault..

    Anyone know anything about pressure washer faults mines playing up a bit,whats happening is it keeps switching on and off constantly but only when the trigger is NOT being pressed,it actually works fine when using the lance to clean..it's a Challenge Extreme 1800w (Argos) had it about 2 years so not that old.

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    Has it got a leak. Probably internal?

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    Regular Member rich r's Avatar
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    I've had two pressure washers do this over the years - it's got a leak. Most likely one of the rubber washers has split or an o-ring has moved out of position. Put it on a dry bit of ground and see if you get dribbles of water out the bottom as it pulses.

    You may be able to repair it (I managed to replace a washer on an Aldi one (a rebadged Karcher - I found the equivalent discontinued Karcher model and ordered the washers for that), or you might spend hours and never get it to seal properly (my next one did this).

    I reckon that with sub-£100 pressure washers, they've only got a lifetime of three or four years before they wear out and start doing this, so you either spend more initially for one with a different type of pump, or you budget to replace it every few years.

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    Full Member Caveman_nige's Avatar
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    lol interesting to read this, i have one that does this and it is also a rebadged Karcher on from Aldi.. @rich r I don't suppose you know where i can order these replacement washers?
    My old Signum, the animal; she now rests in pieces in several other members cars.. https://www.vectra-c.com/forum/garag...vehicle&id=200
    The wifes vec show car, started as a standard daily driver and ended up like this. https://www.vectra-c.com/forum/garag...vehicle&id=709



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    Full Member Big Sig's Avatar
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    I just buy a cheap one, if it goes wrong within a year it goes back, if dies after that then it goes in the bin.
    Now I need a turbo to keep up!

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    Regular Member Derek Mc's Avatar
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    Inlet water filter a bit clogged?

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    Regular Member rich r's Avatar
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    It was about 5 years ago, so I can't rememeber - but I found a place online that sold spares for Karcher, and matched the pictures to find the Karcher model number.

    To be honest, the act of taking the pump unit apart introduced new leaks which meant I had to take it apart several times until I got it to seal.

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    Check ebay for Pressure Washer Spares....Lots of parts on there....

    C heers

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    Full Member Caveman_nige's Avatar
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    seems this is a very common fault, mine is four years old but i do not consider that to be old. I say its an obvious design fault when you see how many knackered pressure washers there on there many only two years old like macdad's. Its not worth spending any more on an expensive one as they are as bad as the cheaper ones they also make for the chain stores... I am going to strip it down and see if i can fix it, it does not leak it just pulses so far exactly as described by the OP in post 1.
    My old Signum, the animal; she now rests in pieces in several other members cars.. https://www.vectra-c.com/forum/garag...vehicle&id=200
    The wifes vec show car, started as a standard daily driver and ended up like this. https://www.vectra-c.com/forum/garag...vehicle&id=709



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    Regular Member rich r's Avatar
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    That's what I decided in the end, just replace with a cheap (though still with enough flow and pressure, so not the really cheap one) one every 4 years or so. The usual three piston pump arrangement eventually leaks, I assume from the plastic getting stressed and flexing slightly.

    Keep an eye out for the big sales at the end of summer or winter at places like Homebase, B&Q and also the Aldi and Lidl ones, which are usually rebranded discontinued models from good manufacturers. If there's a really good deal, buy it and leave it in it's box until you need it.

    I've currently got a little Black and Decker one, which cost me £35 at Homebase (20% discount sale, plus £10 voucher from Nectar points). Small and light but has the same flow rate and pressure as my old big heavy Karcher. Doesn't have the range of nozzles though, and the high pressure hose is quite short (3m). Not a problem washing the Vectra, but it does make it difficult to wash the roof of my Pajero!

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