Having problems with your 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?

\015 When the washer is switched on and water connected and flowing, the motor keeps going even though the trigger is in the off position. Also the re is a loss in pressure\015

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 :

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

My Karcher K3.48M pressure washer remains in the low pressure mode even when I return the pressure nozzle to the high pressure position. How can this be corrected. The pump seems to build up the pressure because when I release the handle the pump motor stops. This is a fairly new pump which was purchased in the latter part of last year(2010). Could this have been caused by the detergent I have been using which is an automotive shampoo? Please help I love this washer and for the times that I u


... Karcher PSI Electric Pressure Washer

I have a Karcher 2.94 pressure washer but when I turn it on nothing happens,I have tryed checking the hose for any blockedge which there isn't. When I used to turn it on before it used to give quick buss,which I'm guessing is the motor,but now there is nothing. Please can you help in any way? Thanks Colin.


My karcher k 2.94 makes a loud screeching noise when trigger gun is pulled and released.... any idea what this may be ??? ... Karcher Pressure Washers

I have a G2500VH pressure washer that has started to pulse when the trigger is squeezed. This happens if I use the 0,25, and 40 degree nozzles BUT if I use the one for low pressure(detergent use) it will hold pressure fine. I have changed the unloader valve, checked all the valves and seals ad they seem to be fine. What could be the problem?


Do you mean pressure on and off with the hp tips and smooth and steady with chemical tip? ... Pressure Washers

I have the Coleman powermate 2400 PSI pressure washer and on initial start it sprays and has great pressure. But once I release the spray handle it will not spray again, not even one drop of water. I have verified water pressure, bought 3/4 hose, and also changed the spray handle with no help. Pressure washer was bought new at Lowes, but did not use for first three years of ownership, should have tested it. Thanks for any help on this. Ted Miller


Sounds like the valve in the handle is sticking closed. May have a broken spring, or maybe a part is stuck..\015\012I say take it apart, and the answer will present itself.. Play with it with nozzle out too... Maybe something is stuck after st ... Coleman Pressure Washers

Hi. I'm scratch building a pressure washer using a Comet BXD2831G pump. If I don't plan on using any type of detergent, is it OK (or manditory) to plug the detergent intake to keep it from sucking air? I would use a short piece of hose over the intake with a screw in the opposite end. Also, is it possible to set the pressure by ear? If so, what should I listen for? Thanks for your help!


No need to plug the injector because under pressure (internal force/pressure) keeps valve shut. It only opens when large nozzle (black tip) is used lowering internal pressure causing siphon effect. Some chemical injectors have a thumbwheel ... Comet GXD2527G Pressure Washer Pump

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

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

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

No pressure,but some times have hi pressure, but just for a few seconds. The person before me had the machine without been used for long time now has this problem. only had pressure for 2 times than nothing again help me please. Thank's Astro


First if you have a filter where the water is coming into machine and if you have not already cleaned the filter clean it,but i'm sure you have already thought of that after that the pump may have a problem, most of the time it is cheaper to buy ano ... Honda Karcher G2400HH-R Pressure Washer

Rockworth Powertask Pressure Washer : model no AROW4P seems to rev flat out, hav to put choke in middle to use so not to fast revs. Im sure it used to rev higher and lower according to use of lance. could it be something to do with 3 valve things if so how could i tell if ok. put clean fuel in. oil level ok.another problem is when switched on water comes straight through lance,trigger makes no diffrence. please help


... Pressure Washers

I have a tpw 2200 pressure washer that has lost high pressure. i have low pressure but not high pressure.rn The machine i have is a titan tpw 2200 if some body can tell me what is wrong please help. Thank john


Pour a large amount of liquid TSP into the fresh water inlet where the garden hose connects and let is sit for a couple of days.\015\012This is how I fixed my pressure problem ... Pressure Washers

I am trying to clean my block paving using my pressure washer Karcher 3.99, which I used successfully last summer, however, it is not cleaning well. I have used the high power nozzle but the power seems inefficient to get the dirt out of the paving. Please can you advvise what you think the problem may be. Many thanks. Sue Thompson


Hello Sue, you don't say where in the world you live, but if you are attempting to clean dirt and algae off pavers, you need to add a solution to the water jet via the inbuilt attachment. Mix a fairly mild solution of bleach and detergent, pus a dash ... Karcher Pressure Washers

My karcher pressure washers motor revs up and down when being used and loses pressure. can you tell me the cause of this problem and how easy it is to fix and what the cost would be please?


Hello, W/D here.It sounds like there is air in the machine, causing the over revving and loss of pressure. When the revving decreases, it's because some of the air has passed, and the washer is then trying to pump water, only to have more air ... Karcher K3.68MR Electric Pressure Washer

Could someone please help me i have a lavor 160 superwash and every lance works except when i put the turbo lance on i get full pressure for a few seconds then goes low then high etc etc it has 2 be something simple so please anybody all advise needed thanks


... Honda Karcher G2400HH-R Pressure Washer

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

I have used the McCulloch (FH180A) three times over the course of two years. On my fourth use the pressure washer just surged on and off and I would get a tiny spray from the gun each time it surged. In other words it would do nothing. Please help... very frustrated. Thanks


Sounds like the problem could be low input water flow or pressure. There could be crud on the intake where you hook up the garden hose, there could be some other sort of blockage. Try hooking it up to the hose and pull the trigger (with the po ... McCulloch FH180A Electric Pressure Washer

Have a Karcher steamer SC1002. The safety cap will not turn. Did not leave any water in it after I last used it. According to the instructions I needed to contact customer services but they were no help. Any suggestions please as how I can release the cap so I can use the machine. Thank you


Dear friends,\015\012I once solved a problem like this with a simple trick. The problem is that it should be done by a qulified tecnician. I will suggest this trick, but do not take responsability if unqualified persons try to do it. The tr ... Karcher 2500 PSI Pressure Washer

I HAVE A NEW CRAFTSMAN PRESSURE WASHER WITH KEY START. I HAVE USED IT ONCE AND WHEN I TRIED TO START IT IT WAS HARD TO START HAD TO PULL START IT. NOW IT WONT START. LET PRESSURE OUT HAVE HOSE OH AND RUNNING, NEW SPARK PLUG HAS OIL, GAS FILTER FINE.HAS GOOD COMPRESSION, BUT WILL NOT FIRE GET SOME RECOIL. GETTING GAS TO SPARK PLUG AND GETTING SPARK. IM LOST PLEASE HELP.


... Pressure Washers

Folks, I have a Karcher 5.55 home water blaster that pulses at the highest pressure on the vario power spray wand. It works fine on the lower pressure settings and with the rotary spray wand. I live in a temperate climate, depressurize and drain after each use, always prime the pump, have good water supply, cleaned the filter etc etc. Any pointers on to do or test next? Any help greatly appreciated.


... Karcher Pressure Washers

I have a karcher 2.o1 pressure washer does not work when i turn the water on, if i turn the water off it works, cant figure it help , help please


Please try without the high pressure lance on. If this works then you may have a blocked jet in the lance. ... Karcher 2500 PSI Pressure Washer

Silt keeps remaining on the top layer of the dishwasher stuff - especially the glasses. The things that turn and squirt are clean. I use the tablets that combine salt & rinse aid but also keep these topped up in dishwasher - please help!


... Dishwashers

I was using the pressure washer and it stopped having high pressure and motor keeps doing a varoom--- pause----varoom----pause and does not stop doing this even with the wand off. Does anyone know what to do? it is a karcher 1750 psi electric washer


This problem, where the unit continually switches on and off when the handgun is closed, is quite common. Unfortunately it has at least six different possible causes, only two of which are easily checked. \015\012\015\012The first thing yo ... Karcher PSI Electric Pressure Washer

When I use my Karcher pressure washer it works perfectly until I release the trigger. Instead of remaining silent until I pull the trigger again the motor intermittently, at approx 2/3 second intervals, starts and stops. Could you please advise what is causing this to happen please.


What it is doing is keeping the pressure up in the hose. It is completely normal for it to do that. they all do it. Listen to others in use and it will do the same thing. Nothing to worry about. ... Karcher Pressure Washers

The oil in my gc160 Honda pressure washer is getting water in it some how. Could it be something with the water pump gasket or what? And I can get it started but can't keep it running un less I keep spraying starter fluid in the carbar. Please help ?


... Karcher 2500 PSI 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: 0.0943 seconds