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Why does my Karcher pressure washer Pulsates when switched on also leakes water.


Hi,
Shame you did not leave the model type of "Karcher" pressure washer as there are several models.
There is normally a special oil which should be changed, expect this to be done at least every three years or less.
1/. These pressure washers should only be serviced or taken apart at one of their registered dealers, as far as pulsating if you have the cheaper models then they do not last very long.
2/. Their better more power washers pulsate all the time & that is why they are sold new with a special fitted container, this allows all the pipes & water connections to fit & hold in supplied container, which allows you to give a higher or lower power controller where their yellow pipe that attaches to the gun fits on the machine.
3/. Where the pressure pipe goes into the power washer it has a black knurled fitting to adjust the pressure higher or lower out put, this is the only adjustment you can make on these power washers, everything else needs to be done by their approved dealers, situated all around the world, try finding your nearest dealer through the Internet. Hope this helps. Malcolm.

Feb 07, 2015 | Karcher Garden

1 Answer

My karcher 250 pulsates when i turn it on, any idia how to fix it thanks


My karcher 250 pulsates when i turn it on, any idia how to fix it thanks

Several things can cause this problem. It is trying to build up pressure and something is preventing it.

1. check water pressure comming out of the the spicket.
2. Make sure the hose and connectors aren't leaking.
3. make sure there isn't any water leaking from the washer.

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.

Terry

Jan 15, 2011 | Garden

1 Answer

My Karcher pressure washer pulsates and the water pressure is not as good as when I first got it


your pressure bypass valve is leaking water pressure by and not building full pressure

Sep 12, 2010 | Karcher Garden

2 Answers

Pulsating when idle


The motor doesn't pulsate when you are spraying and pulsattes when not spraying is normal otherwise the pressure will just keep building and burn out the pump. However, if you are not using the sprayer right away then the unit should be shut off until your ready to start again.
I hope the answer is helpful, please rate if the answer has helped in any way. Good Luck and have a great weekend.

Apr 03, 2010 | Karcher K 3.98 M Electric Pressure Washer

1 Answer

Pressure washer is pulsating when powered on


it just the presure building back up ,it will last years doing this,i would not worrie as replacing the presure pump will only be a temp fix and it will do it again ,most washes do this after a year or lots of use.

Dec 31, 2009 | Karcher 1750 psi Electric Pressure Washer

1 Answer

I have a karcher 495, it is puslating when it is


It sounds like there may be a pressure leak somewhere in the system. The machine cuts off when there is no flow of water past it. If it is leaking then there is intermittent flow. Which would make the machine run then stop continuously.

Nov 15, 2009 | Karcher K 5.85 M Electric Pressure Washer

1 Answer

I have a K3 78M electric unit . The motor pulsates


This sounds like an internal leak. If you are handy enough here is a schematic. On B@ it could be #25 is sticking or the valve inside #8 is leaking or the water seals #18 need replacing or #1 is leaking

Aug 18, 2009 | Karcher Garden

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