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Why does karcher 2.87 loose pressue gradually ?

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Karcher hds 558c after about 15mins looses pressure, then about 30 seconds later pure stream come out

Sounds like water is not getting to the pump for some reason. As the pump needs constant water flowing through it for cooling, you should not operate the unit until you find the problem. The pump could be damaged.

If you need further help, I’m available over the phone at

Jul 18, 2016 | Karcher Garden

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I own a karcher KB 4040 which is about three years old. It has begun loosing pressure as a result of a leak within the motor/pump area. I'm loosing as much water via the pump as goes throught the nozzle....

England (UK)
Home & Garden Helpline: 01295 752200

Karcher USA telephone number

If you call which ever country you are in telephone number they should be able to guide you to the nearest service center.

Jan 11, 2011 | Karcher Garden

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Hi i have a karcher k4.91 and it is lossing pressure and leaking from inside the casing..what would be the likely cause.. many thanks

This could be a problem in the pump, the seals may have been damaged if it is an older machine through age. You could check a local karcher supplier/dealer and they should be able to replace that for you. Another problem maybe that an inlet elbow could be loose and does not seal correctly so it may need replacing.

These solutions depend on what area inside the machine the water is leaking from.

Jan 11, 2011 | Karcher Garden

1 Answer

Over time the hinge on my Dell 8100 Inspiron gradually froze up and broke the aluminum block in the middle of the the screw that held it in place, ie. half the threads on each side of the broken piece. ...

Very common break, best is to have service performed by some one that knows what they are doing, machine has to be taken apart and new base installed, sometimes if slight break they can be epoxy. but usually needs new base andor hinges.

Nov 04, 2017 | Dell Inspiron 8100 Notebook

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Loss of pressure

Check for possible loose connections, its possible it could be leaking which would cause the loss of pressure.

Aug 09, 2009 | Karcher K2.26 Electric Power Washer

1 Answer

High pressue does not always start. you have to press the lever several times before it cranks up. Once running the pressure is good

cleaning valve & replace O ring solved the problem. Oil was white (water) and I replaced it. Working well.

Jul 18, 2009 | Karcher Garden

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