Question about Karcher 2500 PSI Pressure Washer

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I have a Honda GX110 petrol pressure washer, it runs but the pressure is poor. If I turn the red knob on the pump no difference is noticeable. Also the pressure gauge is faulty but I don't think this should affect the pressure??

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  • Anonymous Mar 18, 2014

    cracked petrol bowl

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  • Master
  • 755 Answers

You should check with the manufacturer for a pump kit for this washer.

If it's a good unit they should have the stuff to freshen up the pump so it runs like new.

Have you checked the oil level in the pump itself? Make sure its to level and the oil is clean and free of water contamination. It will look like milk if its got water in it.

If you live in a very cold climate always remember to winterize the pump or it could freeze and be damaged beyond repair.

Posted on Dec 09, 2009

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1 Answer

The engine runs but the water will not come out under pressure


You must have blown out the cones (thats how the water gets compressed inside of pump) in the water pump-

You could try this though on the back of the washer right on top of the water pump is a black knob about the size of your hand that knob will adjust the pressure try turning it and see although I doubt that is the problem-

A pressure washer is not like a compressor you HAVE to pull the trigger every minute NEVER let it just sit there running without pulling the trigger to release the pressure that Dewalt 3800 psi washer you have is a great machine in fact we own 4 of them and they are pretty powerful and easy to damage if left running alone.

TY,

Perry Tradesman

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2 Answers

Honda 160 homelite pressure washer 2700 psi no pressure


Water comes out the nozzle, but low pressure? ( more than when the motor is not running)
I would check the check valves and the unloader.
If the amount of water coming out the nozzle is the same when the motor is running or not running.
Either the key that connects the motor shaft to the pump shaft is sheared, or the pump is trash.
No water comes out the nozzle would indicate a clogged inlet filter or blockage at the gun valve or nozzle.

May 05, 2014 | Homelite Pressure Washer. Honda 2700 psi...

1 Answer

Devilbis Excell pressure washer with Honda engine runs smoothly without wand, but stalls when wand is attached.


If the pressure unloader is not working correctly and/or the nozzle is partially clogged with debris, the engine will be overtasked. Try lowering the pressure by turning the pressure knob to lowest setting and test. If the engine continues to run, gradually increase the pressure. Try using the washer set to about 75% of rated capacity and use max pressure for stubborn stains. Using any machine at max will shorten the life of components. If lowering pressure does not help, then unloader is faulty or stuck. Try storing the unit with oil in the pump. Remove both hoses and infuse oil into water inlet intill all the water is displaced (let set for day or two). Good luck

Sep 27, 2011 | Karcher 2500 PSI Pressure Washer

1 Answer

My honda gx110 water pump has been sitting outside for a year and now wont start.. I've bled it, changed the oil and refuelled, still no success! (plug seems ok) any suggestions? cheers


There is a very good possibility that corrosion has locked up the float. I would try removing the cover/bowl and make sure the float isn't stuck. With all of the other things you've done this is my best guess.
Good luck!

Jan 26, 2011 | Honda 8 HP Engine

1 Answer

Checked everything, all knobs in the right position but after pulling the cord many times it won't crank up, this is the first time I am trying to use it, it is a Homelite 2600


Hi, even though i am stating the obvious , please check that you have petrol/gas in it , the fuel tap is turned on and that there is oil in it ( it has a internal oil alert switch that stops the machine running if there is little or no oil in it and usually there shipped with no oil in them )and make sure the engine stop/run switch is set to run/on , if this fails then take it back to the shop and demand a refund/replacement .
Hope this helps , please rate accordingly

Aug 31, 2010 | Honda Pressure Washer PSI 3000

1 Answer

Northstar PW shuts off hot if washer is moved. Honda engine


Being petrol driven, it may have a mercury kill switch which puts a ground on the ignition circuit stopping the engine if you move it. Perhaps for safety in case you overturn the unit somehow.

Apr 08, 2010 | Northstar Pressure Washer 3000 PSI

3 Answers

I have a craftsman 3000psi power washer. Hose beats the ground


Hi, when the hose shakes badly it is normal down to dirt in the valves.
please check them first

Jul 16, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Losing pressure more and more often, especially


not quite sure where to get the parts, but if the pressure starts out ok and decreases as it runs, it is generally that the piston rings/seals are worn out, this can happen just from sitting up over the winter.

You can google Honda Pressure Washer Parts to find a supplier for the seals/rings

Jul 05, 2009 | Honda Garden

1 Answer

Honda gx110 3.5


I'm assuming this is a 4 cycle engine. If yes check the level of the oil in the crankcase - DON'T over fill, drain some out if over filled. If 2 cycle engine your oil mix is to rich. drain gas from tank and mix a fresh match of fuel with the proper amount of oil.

Jun 24, 2009 | Honda 8 HP Engine

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