Question about Karcher 2500 PSI Pressure Washer

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Kracher k3 97, low pressure

The motor runs and cuts out as it sould befor the trigger is pulled, but when the trigger is pulled there is flow but no pressure the motor cuts in ok, i have checked the inlet filter, please help.

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Your pressure relief valve is stuck open. try adjusting the nut shaped stem on the front of the valve to see if you can unstick it. if not you'll have to take apart and clean.

Posted on Apr 21, 2009


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1 Answer

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blocked main jet or fuel flow problem until you pull the trigger there is no pressure in the pump pulling the trigger makes the pump work and the motor is not responding possibly from a carby fault

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Hi Cliff:
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I switch the pressure washer on motor starts pressure builds up motor stops. OK pull the trigger on the lance the moter starts sounds different water pressure low. Release trigger motor still runs.

It isnt very clear your explanation of the problem but what type washer do you have first? It sounds like you have a bad unloader or need a new variable nozzle tip. Can you explain in more clear detail. Thanks

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1 Answer

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Hi if it stop when the trigger is pulled the issue is with the motor.
stopping is caused by , low revs on motor or low compression or poor spark, sometimes faulty carby.
change spark plug , adjust valve ( when valve has some slight side movment it is ok if up and down , it should be tighter (valves usually under side cover near top ) increase revs a little ( make sure revs dont get rough when running high) set max revs to when the engine still runs smoothly at max.

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1 Answer

Kracher power washer won't turn on

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1 Answer

When trigger is pulled pressure goes up and down as long as trigger is held

When you start the pressure washer, having the water from the faucet at full pressure, apply pressure to the triger gently....this should allow the system to release the pressure gradually and keep up.....when you pull the trigger full throttle, it can cause the jurking sensation in system. If this does not resolve the problem you may have a bad empeller pump and requires replacement. Do not allow the pressure washer to run for more than a couple of minutes without water flowing thru is as this will burn up the motor )empeller pump). Good luck

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1 Answer

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1 Answer

Karcher K2.36 motor cut out and won't restart

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Pressure Washer Engine will not stay running

My Kracher 2500 pressure washer has no pressure unless I remove the nozzle. If, I remove the nozzle and pump the trigger several times and quickly replace the nozzle it works fine until I release the trigger. Karcher (online) suggested I remove and clean the unloader which I did. It still doesn't work correctly. What another solution?

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