Question about Karcher 2500 PSI Pressure Washer

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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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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 174 Answers

SOURCE: 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.

Posted on Aug 25, 2009

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Dolfoff
  • 148 Answers

SOURCE: i just bought a 2nd hand honda excell psi max vr

Have a helper hold the trigger of the wand open while you try it again. If it starts that way you have a sticky unloader valve in the pump. DO NOT RELEASE the trigger for more than 10 seconds if the engine continues to strain when released! If the engine doesnt run freely when you let go of the trigger, pull it again and shut down the unit!
Add some power steering fluid to your supply hose (about 3 or 4 ounces at a time) and restart the unit with the trigger pulled. Allow the oil to flow through the pump for 1 - 2 minutes for each treatment. Several treatments should make the pump and valve happy again.

Hope this helps.

Posted on Sep 28, 2009

jeff_drakesr
  • 155 Answers

SOURCE: Pulsating when idle

The motor doesn't pulsate when you are spraying and pulsattes when not spraying is normal otherwise the pressure will just keep building and burn out the pump. However, if you are not using the sprayer right away then the unit should be shut off until your ready to start again.
I hope the answer is helpful, please rate if the answer has helped in any way. Good Luck and have a great weekend.

Posted on Apr 04, 2010

  • 8 Answers

SOURCE: let go of wand trigger pressure will not come back

spill valve is stuck and needs to be cleaned and greased common problem....also check all connections for blockage in line

Posted on Jul 25, 2010

wmpcs
  • 100 Answers

SOURCE: have a Honda Excell VR

If they are the tires with the plastic rims then there was a recall and a local service center can replace them for free, if not I have tires that fit on this unit in stock, price is $13.33 each, send me a email at justin@wmpcs.com

Posted on Nov 09, 2010

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I just bought a 2nd hand honda excell psi max vr 2522 2.2 gpm max 5.5 hp gvc160. i put gas and oil and it wouldn't start?


Have a helper hold the trigger of the wand open while you try it again. If it starts that way you have a sticky unloader valve in the pump. DO NOT RELEASE the trigger for more than 10 seconds if the engine continues to strain when released! If the engine doesnt run freely when you let go of the trigger, pull it again and shut down the unit!
Add some power steering fluid to your supply hose (about 3 or 4 ounces at a time) and restart the unit with the trigger pulled. Allow the oil to flow through the pump for 1 - 2 minutes for each treatment. Several treatments should make the pump and valve happy again.

Hope this helps.

Sep 25, 2009 | Karcher 2500 PSI Pressure Washer

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

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