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Karcher G2650 OH - When I start engine pressure builds up and the engine will stop- When I pull the wand handle back - I get a high release of pressure - I can hold the wand open and start the engine and it will run until I close the wand - egnine stops

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Take a look at this link, I think this might solve your problem

http://www.wmpcs.com/blog/?p=72

Posted on Oct 28, 2010

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My Karcher 530M runs ok until I release the trigger, then it will not start again unless I switch and allow the water to run through for about 15 secs before switching on again


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My experience is that the pump pressures prevent the engine from starting, so we hold the trigger while starting.
My brother has cut a wedge of wood that he uses to jam the trigger open to bypass the problem. It can get a bit wild if the wand is not secured when the unit is started..

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Honda engine will not start,,,new plug, new gas, new oil


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New Troy-Bilt 3000 psi - Very Hard to Hot Start


When you run the unit and shut if off, release the pressure from the spray wand before trying to restart the engine. This built up pressure will cause it to be very hard to start as you have found out. If it does not start on the second pull release the pressure again. Another option is do do what I did on mine. I simply put a pull tie on the handle so I can pull the trigger back and use the pull tie to hold the trigger open. Make sure if you do this, that you remove the high pressure orifice from the end of the wand before attempting to start the engine. Otherwise the pressure will come on abruptly and could injure you or do property damage.

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1 Answer

Karcher k1 leaking from inside casing.


The most likely issue, which seems to occur alot with karcher, is a cracked water pump. What happens is that as you release the trigger on the handle, the rise in pressure should cut off the motor, but as it also cuts off the water flow at the wand end and the motor spins a few more revs until it stops, then there is a huge pressure glitch which blows apart the weak plastic pumps that they use. Since the plastic cracks it is very difficult to repair and the only option is to go and buy another. BUT...this time tape up the trigger on the handle so it is always on and then it won't blow itself up. Just use the unit on/off switch to turn the motor on and off.

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Preasure washer want preasure up. engine runs find but wand want kick into high preasure


Hello,
Start the engine on your pressure cleaner then with your lance change it to low pressure as if you were applying detergent i think your model has the 5 different quickfit jets put the large derergent one in and give it a hit...
Then put the high pressure jet back in and see if it will build up pressure now, if this works then your bypass/unloader valve is sticking in the head it will need removing and cleaning up and lubricating...

This is the most common cause of not building up pressure and is usually caused by sitting around and not using the pressure cleaner regulary...

Good Luck!!! Hope this helps

Kind Regards
Brad

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1 Answer

Lack of pressure after releasing the trigger on the wand


Hello awcockerill:
This sounds like the bypass (unloader) valve is sticking. Here is a diagram of your machine's pump. On page 2.4 see part #1. The top of this assembly is a black plastic cover. Remove all of assembly # 1 carefully. Under that is part #8. This is the bypass valve. You need to pull this out, check that the o-rings are not bent, worn or damaged, then lube it good with a VERY VERY good waterproof grease. Re-assemble it and all should be well. The part numbers are on the diagram but where to get them depends on were you live. Karcher web site may give you a number to call. Good luck.

Aug 24, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Engine stalls when I release the wand handle (stop water flow from wand).


this is because the pressure is wound up too high ,if you back the pressure off abit you will solve the problem. if your machine has a pressure gauge ,you will be able to see the pressure needle"spike" when you release the trigger.that is the needle jumps right up high that is when motor stalls if you adjust the pressureso that the "spiking" effect is minimal your machine will not stall ,..I hope that helps

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1 Answer

The presure pump is not working.


Try to release the pressure from the wand. Take of the tip if you have to. If that doesn't work take the spark plug out and pull, oil may have gone into the valves. Clean the plug and put it back. It will clear, the smoke that is. Lemme know. Please rate me

Jun 17, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Trigger problems


It is recommended that once pressure washer is in operation and water flow thru wand is there ,that you do not allow off period between burst of no more that 2 minutes or you highly risk damage to your pump,not engine, due to overheating. See if Dump valve is adjustable,cheaper models not adjustable. This valve senses pressure/heat build up in pump when trigger is released, and is a secondery backup to release such heat/pressure to avoid pump failure. If you have repeatly left trigger off for more than 2 minutes in for prolonged periods of time,this is not good.

Thanks and Please Rate a Fix Ya
John jj505

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