Question about Karcher 2500 PSI Pressure Washer

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When pressure washer handle is activated I get a burst of water then the pressure goes away

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The pump key was gone and the shaft was torn up so had to get new pump.

Posted on Sep 01, 2014

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The machine has a worn by pass valve. Change valve assembly. Also check high pressure valves are not worn or blocked,

Posted on Mar 06, 2009

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1 Answer

Will not build up pressure sounds like it is but as soon as you hit the trigger pressure goes away


Is this something new happening?

These machines quickly (a matter of seconds) build up to pressure and shut off. A slow leak is not much of a player. Eventually the pressure will bleed off and the pump come on (for a few seconds).

Pressure restored, should be good to go. Have you cleaned the inline filter to the hose. If there is a short burst of water then a dribble with a new hose, the filter is a first check

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Why does my pressure hose burst when I use a turbo nozzle


Turbo heads are pressure rated for different pressure washers, your turbo head is most likely rated bellow the maximum pressure of your washer which in turn causes a pressure build up in the hose and it's eventual failure.

Sep 24, 2014 | Honda Pressure Washer PSI 3000

1 Answer

Craftsman 580 767101 when i squeeze the handle pressure it loses pressure. If i squeeze i get a burst of pressure, it then fades out. Relese the handle and squezze i get another burst


Sounds like the inlet water source may be blocked. When you hold the trigger open, water should flow freely. If this is not the problem, it may be that the pump seals are going bad.

Jan 21, 2014 | Craftsman Garden

1 Answer

I have a Bosch aquatak 120i the motor keeps running all the time


Hello sir, that is a on going problem with power washers the pump not working, than works sporadically. the main cause is leaving the pressure hose hooked up to the machine over a long period of time,not draining hose & machine, in the winter time the hose & pump will freeze causing hose & pump to expand and burst.handle to leak busting the o rings, build up of calcium deposits from hard water clogging up pump nozzle,valves in the gun handle,clogging hose fittings and screens.one of these has to be your problem.you can find a parts brake down at KARCHER.COM.orRJ BOWERS.COM . and manuals,these are good info,sites,hope this helps.thankyou. ~~

Feb 19, 2012 | Garden

1 Answer

Leaking handgun karcher k785


Hello sir, that is a on going problem with power washers the pump not working, than works sporadically. the main cause is leaving the pressure hose hooked up to the machine over a long period of time,not draining hose & machine, in the winter time the hose & pump will freeze causing hose & pump to expand and burst.handle to leak busting the o rings, build up of calcium deposits from hard water clogging up pump nozzle,valves in the gun handle,clogging hose fittings and screens.one of these has to be your problem.you can find a parts brake down at KARCHER.COM.orRJ BOWERS.COM . and manuals,these are good info,sites,hope this helps.thankyou. !!

Feb 19, 2012 | Garden

1 Answer

My Hoover First Edition keeps filling with water to the point of it pouring out of the door. It seems to be draining fine, but just keeps letting in short bursts of water, which don't seem to stop. ...


This seems quite likely to be a fault of the WATER LEVEL SENSOR. So since the pressure activated switch is not working even when the set water level is reached the water overflows.
Drain the water out of the washer and remove the level sensor which is located on the rim of the drum which has a tube feeding water to a pressure activated switch- the diaphragm could have punctured or failed on the switch.
You can bypass the switch by shorting to see if the machine starts and works , if so change the switch.

May 18, 2011 | Hotpoint First Edition FEW12 Front Load...

1 Answer

Why does the pressure washer water come out in bursts?


Is your inlet water supply open fully, it will pump in spurts if the pump is not receiving enough inlet water volume and pressure.

Mar 27, 2011 | Garden

1 Answer

The handle which the hose is attached to is leaking and i have only been using it 4 times. The first time using it the hose burst and leak but was replaced because it was under warranty. Its just over 2...


Hi,

Thanks for your quick respond. I have managed t o source another supplier which has the parts and is charging me $30 dollars for a refurbish part. But if the pressure hose or the handle goes again, then I will possibly throw the thing away as it is not worth to fix it again.

Oct 12, 2009 | Garden

1 Answer

Loses pressure


The unloader valve in the water pump is stuck. The grease wears away after time. You need to remove it, apply grease to the upper o-ring and reinstall it. Use pump guard in the future to prevent this problem.

Mar 21, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Washer Impelling into Hot Water Line


this sounds impossible,hold old is the washer? how long are the hoses to the washer?is it the temp pressure valve on the heater that bursts? can you hear the water draining out the drain pipe, this machine don't go into spin till the water has been drained.

Oct 31, 2008 | Kenmore Elite 45986 Front Load Washer

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