Having problems with your Pressure Washers ?

My karcher k5.55 has lost it pressure and keeps purging when trigger is off


Answers :

Repair Help & Product Troubleshooting for Pressure Washers

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

My karcher k5.55 has lost it pressure and keeps purging when trigger is off


... Pressure Washers

Hope u can help when the karcher is conected up and the trigger on the handle is not depressed the machine makes a noise like its trying to presureise the hose it keep kicking in and out i have lost the pressure although it works its not a high enough pressure to be effective


The power washer stops when the gun is closed. This happens because pressure is exerted on a control valve (Spill Valve)...which in turn touches a micro switch and cuts electricity. Now most probably your machine is kickin in an out because the spill ... Karcher K2.26 Electric Power Washer

Karcher 550m has lost alot of its pressure,Why ,it keeps running when turned on, without pulling the trigger


Dear emmettbrickw,\015\012Many of the models of Karcher machines, have a valve that under pressure...will compress and at the same time it will let water by-pass and circulating inside the head. As this valve compresses it also puts off a micro ... Karcher Pressure Washers

My 3.99 Karcher pressure cleaner seems to keep going on,off,on,off when i release the trigger.It used to keep going momentarly when the trigger was released until the pressure built up,then cut off until the trigger was pressed .Now it goes on ,off,on,off and has decreased pressure.


Hi! robcarrollDid you purge the air from the pump before starting the motor.InMrFixIt ... Karcher 2500 PSI Pressure Washer

Hy; I have a karcher 580 I had to replace gun complete so I bough a simoniz xe01-001 at simoniz.osirus.ca/ for your info 69$ complete ***.I install NOW I get pulse up & down ONLY when trigger is press I turn valve down i only get 10% of pressure if i turn valve up that is when it start pulsing pressure up & down it wont keep pressure up ... Bob...


Most likely problem is that the tip is too small causing Unloader to bypass or restriction/debris in tip. Install clean tip of proper size or 1/2 size larger (example from 2.5 gpm to 3 gpm ) to prevent slow pulse. If tip is clean and /o ... Karcher 2500 PSI Pressure Washer

Model Karcher 320H 1.141-205 When first switched on the pressure builds up and then the machine keeps no switching on and off, opening the trigger on the lance and it works ok, close trigger and the pulsing starts again, if left like this it would probably burn the motor out. I have lubricated the brass/plastic piston the operates the on/off switch but problem still exists. I have also opened the pump chamber but cannot see any debris or problems with the rubber seals. Any help would be most app


... Karcher 1550PSI Pressure Washer

Karcher pressure washer keeps pulsing when not in use and has lost pressure when in use


This can happen if the head of the pressure pump has split. You may need a new head, and to stop this happening again, tie the rigger open with a zippy tie. The water will run all time now and automatically bleed any air form the system. When you wan ... Karcher Pressure Washers

My Karcher K 5.55 pulses when the trigger is not pulled and has lost pressure


... Pressure Washers

Karcher pressure washer k3.86 just keep running when you let go the trigger


... Karcher 2500 PSI Pressure Washer

Karcher K3.91, lost some pressure and pulsing when trigger is release. stripped it down and checked all six valves and there all sealing as they should. i took apart the unloader valve cleaned and inspected and thats fine. there is NO water leeks anywhere or oil. preasure washer is 2 years old and gets used once a week for ten minutes. i really dont understand why its playing up


... Pressure Washers

I have a karcher 3.80 md electric pressure washer that keeps running when not in use and the pressure is low. Any help please?


... Pressure Washers

We have a Karcher G2500VH pressure washer. If you start the engine with the trigger pulled on the spray wand it will run at full pressure until you release the trigger. after that, when you pull the trigger it will not have any more pressure than the water hose feeding it. Does it have an internal unloader valve? What is the part number?


Hi, Karcher calls the unloader valve a spill valve, this is a link to a full drawing/parts listing , and your fault description might well be a sticking /seized unloader(spill ) valve hope this helps ... Karcher 2500 PSI Pressure Washer

Karcher K3.86 doesn't seem to be able to sustain pressure. Keeps trying to pressurize then stops. Only keeps pressure while I spray. SOmestimes it totally shuts down, I guess when it overheats.


Probably water flow check filter going into pump there is anut coming out on an angle going into the pump wire gause filter inside if this is clean follow it back to water supply symptoms definately indicate lack of water youdoit ... Pressure Washers

I have a KARCHER Model K 2401 which onstart up has normal water pressure rather than the high. I can usually get it to work by removing the tip, pressing the trigger and running some water through without the tip on. The i replace tip and it will usually retain the high pressure. If I stop depressing the trigger I have to go through these same steps. It is like it loses prime. It works well once I get it started putting out the high pressure.


... Karcher 2500 PSI Pressure Washer

Karcher 620M.To obtain high pressure I have to Move pressure control on nozzle several times until pressure kicks on. As soon as I release trigger and then pull it again, I have same problem -- giggl


... Pressure Washers

I have a Karcher K2.26 1500PSI electric pressure washer and I cannot squeeze the trigger when the water is on. I have to relieve pressure on the line to the gun to be able to squeeze the trigger. I bought this reconditioned from CPO and they are no help, even though they said it was warranted for 30 days. Help!


... Karcher K2.26 Electric Power Washer

Hose feed keeps shooting off the karcher when I release the trigger M520


... Karcher Pressure Washers

The motor keeps cycling on and off (about twice every second) when the pressure trigger is not operated. The unit seems to supply plenty of water pressure when trigger is operated.


The motor is holding pressure in the line.Check the manual. I don't think it is supposed to cycle that much.If it's not designed to do that, then there is a seal or a bearing that is leaking.It's letting water pressure escape ... Karcher K2.26 Electric Power Washer

Karcher 3100 pressure washer, motor runs fine but when I squeeze the trigger on handle, high pressure pump won't come on unless I remove tip and water is coming out of wand without restriction. Help anyone have any ideas? It did come on once but when I let go of trigger it wouldn't come back on.


... Alfred Karcher Quick Connect Nozzles 2600 3100 Psi 5 Pack

I have had 3 Karcher pressure washers all experience the same problem and so have two of my neighbors. Our area has very hard water and it causes problems with the washer not bringing up the pressure when the trigger is pulled (or surges up and down) and the nozzles clogging, etc. The service repair facilities cannot tell me how to prevent this. Many attempts to contact Karcher for advice have been ignored. I have been thinking that perhaps running the engine for a few seconds with no hoses a


If your water is that hard (and it appears it is) WD40 will NOT solve the problem. You should look into a water softener. However, chances are that a small, inexpensive model will not have the flow capacity required for a pressure washer. You'll like ... Karcher K2.26 Electric Power Washer

Have a Karcher kb4040 that continues to run constantly even when the trigger isnt pressed. Also water flows out of the detergant hose when im not pressing the trigger. Pressure seems down slighlty, not much. This happened after i ran water out of trigger gun with no lance attached, machine switched on. Seems to leak from trigger handle aswell. Many thanks in advance


This is two things. One is the back flow check valve to the soap line is leaking. The other is the pressure switch on the output side of the pump. ... Pressure Washers

I have a Troy-Bilt GCV160 pressure washer. While I was pressure washing the water pressure just decreased. The unit will start and runs fine, but there is no pressure when sqeezing the trigger. I purged the water system with no positive results.


Hi and welcome to FixYa. I am Kelly\015\012\015\012First off let me say that the GCV160 is the engine model number and not the unit model number. \015\012\015\012It appears that your model number is 020415 (2600 PSI) as it is ... Pressure Washers

My Karcher 411A seems to have lost pressure. Behaviour is this, when you press the water release on the spray gun you get 100% pressure for like 10 seconds and then it seems to dwindle down to 30-40% of its total pressure. When the pressure cuts down I can hear more noise coming from the gun sprayer aswell. So not sure if the problem is in the gun or the main pump unit ?


Sounds more like a clog on the intake side. Check the filter and the hose on that side. ... Pressure Washers

North star petrol pressure washer. working fine, then no high pressure, checked water feed, water filter , pressure relief valve and gun nosall well work sometimes and keep working, when you release the trigger and try in again the pressure gone again. please help, many thanks, richard


Sounds like the regulator is sticking or is airbound. loosen the water connection and then tighten it back. Could also be that the trigger gun is faulty or needs adjustment. Hope this helped ... Karcher 2500 PSI Pressure Washer

Karcher K 3.68M Electric Pressure Washer. Wand trigger Locks Up.


Sounds like the pressure valve is broken thats why you cant depress the trigger , the valve is on the pump , i would suggest taking it to a repair shop as they are fiddly things to fix ... Karcher PSI Electric Pressure Washer
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.a-wash.org || Terms of Use || Contact || Privacy Policy
Load time: 0.0915 seconds