Having problems with your Karcher 2500 PSI Pressure Washer ?

Pressure is fine when first started ,if trigger released no Psi

\015 Karcher 2400 psi pressure washer\015\012\015\012Pressure is fine when first started and trigger pulled, If trigger is released pressure does not return. If I pull out the choke it will build pressure but that's a pain.What's the problem????\015

Answers :

Your uplift injector valve in the water pump is sticking. You need to remove this part. Lube the top o-ring only with a water proof grease. Reinstall this part. You will be up and running again.
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\015\012You need to use needle nose vise grip tool to easily remove the valve. You need to grind down the vise grip tool to fit the opening where the valve is installed.
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\015\012To prevent this problem from reoccuring use a pump guard additive.
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Pressure is fine when first started ,if trigger released no Psi


Your uplift injector valve in the water pump is sticking. You need to remove this part. Lube the top o-ring only with a water proof grease. Reinstall this part. You will be up and running again. \015\012\015\012You need to use needle nose ... Karcher 2500 PSI Pressure Washer

Fluctuating pressure I have a brand new Northstar 4000 psi, which I started using today. I start the PW and the pressure is great, then the pressure drops. If I release the trigger the problem repeatsand if I hold the trigger the pressure remains low. Very frustrating when you are trying to work.


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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

I have the Karcher 2400 psi, 5.0 Honda engine. Starts fine, but when you pull the handle on the spray wand, the pump does not kick in and the water just continues to trickle out of the end of the wand at regular faucet pressure. Occasionally the "clutch" will kick in and you have full pressure, but if it does and I let off of the trigger then chances are that it won't kick in again. has been getting worse for several years.


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Common with that washer...it has a wabble pump. Release the trigger, if by pass does not engage, stalls engine. You can however keep using it, all you have to do is keep trigger pressed, and when you are cranking engine, depress trigger with the fr ... Pressure Washers

PRESSURE WASHER RUNNING BUT NO WATER COMES OUT WHEN YOU PULL THE TRIGGER??? IT WORKED FINE WHEN I FIRST STARTED IT. I THEN SHUT IT OFF TO MOVE IT. WHEN I STARTED IT BACK UP, IT STOPPED WORKING.


The water admittance valve is stuck. The spring loaded valve lets more water into the pump when the pressure drops when you trigger the wand. Take the valve apart, clean the bore with crocus cloth on a dowel rod. Replace the O Rings and lube with ... Pressure Washers

I have a Karcher K3.91M pressure washer that pulsates when the trigger is released (off). It works fine when turned on, pressure seems OK. Before this started the unit would just turn off until I again wanted to use it. Is it a problem ? Correctable? All connections seem tight & I see no leakage.


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I have a HD 2701 DR pressure washer that starts and runs fine and usually works fine the "first" time but if you let go of the trigger and then try to use it again you just get a trickle out of the end of the wand. Usually if you hold the thing open for a while it will kick in (sometimes it takes forever...). Any ideas? It sounds like some of the "unloader valve" problems are similar but I do not see an "unloader valve" in the parts lists for the 2701...


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My electric 3000 psi campbell hausfeld pressure washer will operate at first until I release the trigger on the wand.


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My Honda VR 2522 on Excell 2500 psi pressure washer run good when in use but when i release the trigger on the wand the motor idles and begans to pulsate, hit and low. Where to i start looking to repair. I have a new air filer installed Roy


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I have a McCulloch FH160B power washer and it no longer builds up pressure. I haven't used this very much at all. I tore it apart and cleaned everything I could find. When i pull the trigger for the spray nozzle, I get line water pressure. When I release the trigger, the power washer sounds like it starts to build up pressure. When this was working correctly, the pump would shut off when the trigger was released. Any suggestions?


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When you release the trigger the pressure inside the pump rises above\015\012working pressure. Once it reaches a set control pressure (around 20%\015\012higher than working pressure) a sprung loaded piston actuates a switch\015\012thus stopping the m ... Karcher 2500 PSI Pressure Washer

I have a Simoniz S2800, it will only start with the trigger depressed to release the pressure and when it starts the engine seems laboured and there doesn't seem to be the ame pressure as it used to have, also if it isn't used after a min or so it will release water pressure from the bottom, do I need a seal kit or a pump kit to correct this problem.


Where is the unloader valve on these machines? ... Pressure Washers

I have a Briggs & Stratton gas power washer. This is the 1st time this year that I have used it. I put in fresh gas, hooked up the water supply. The engine started and then quickly stopped. I had to release the water pressure in the hose before I could pull start the engine. The only way to keep the engine running is to hold down the spray nozzle trigger. Once that is released the pressure in the hose builds up and the engine stops.


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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

Honda pressure washer cuts out when lance trigger released.


You most likely need to set your valve clearances. If it is hard to\015\012pull over or the recoil snaps back after starting your valves need to\015\012be set for sure. This may not be the entire problem but it is a good\015\012start. Also change the ... Karcher 2500 PSI Pressure Washer

I have a bosch 110 plus pressure washer the problem i have is i turn on washer squeeze trigger and works fine when i release trigger and press again it wont work and trigger seems to have pressure on it


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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

We have a Katcher HDS 3.5/30-4 M Ea. Was using it, stopped using it briefly in the middle of a job, pulled trigger again, and there was a lack of pressure. Went to the machine to troubleshoot. The "engine indicator light" is on. Checked the temperature of machine: fine. Water intake: fine. We have not been running it at high temperatures, but about 50 degrees C. The pressure was at about 2300 PSI before it stopped. Any ideas?


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Pressure Washer I have a Porter Cable pressure model no.PCH2401.It works fine for 5 minutes,then I can hear the motor loading down and then it stalls out. I tried to start it and it was very hard to pull on. disconnected the water supply and if was very easy to pull and started right up. I noticed the pump was very hot.This unit has a thermal relief valve on it,shouldn't it have released when it gets to a certain temperature .I was thinking maybe this is why it might be shutting the motor


Any leaks from connection at pump to gun and wand assembly if so the valve is detecting leakage and open up again without u squeezing trigger it builds up in the head.if your trigger gun is leaking internally then you will need to replace the gun thi ... Pressure Washers

Hi ive got a honda gc135 4.0 pressure washer it runs fine but when i release trigger it makes a realy bad noise but when i press the trigger the noise goes i was told it might be the pressure releif valve is this right or is there some thing else wrong with it


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I doubt that it has anything to do with the capacitor on the motor. i think you are having a problem with the actual Motor Drive circuitry. What is happening is when you close the switch, this tells the Motor to "Ramp Up" to pump the water out, what ... Craftsman Pressure Washers

Cannot start my pressure washer. Checked the spark plug - ok. Air filter - ok. Gas - ok. Choke - on. On/off switch - on. water - on. Trigger on wand - depressed to release pressure. Still won't start. Ideas?


The Oil Level? ... Pressure Washers
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