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Presure washer Doesn't stay on full pressure pulsate

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  • Garden Master
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Adjust the screw on the pressure regulator on the high pressure hose is one way The other is to check the nozzle for obstructions. The problem is that there is insufficient flow from the nozzle so the regulator valve is trying to cycle between cut off and working pressure.. The regulator is set at factory for a particular size nozzle and anything that alters that ratio will cause you problem. The screw on the regulator has some fine adjustment to allow for slight changes. Any impurities in the water supply will tend to block the nozzle affecting the regulator .

Posted on Apr 26, 2013

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Posted on Jan 02, 2017

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SOURCE: pressure washer is pulsating when powered on

it just the presure building back up ,it will last years doing this,i would not worrie as replacing the presure pump will only be a temp fix and it will do it again ,most washes do this after a year or lots of use.

Posted on Dec 31, 2009

  • 112 Answers

SOURCE: 1750 psi Electric Pressure Washer: My pressure washer is losing pressure and is pulsa...

I have d'same problem before. replace the head component with the 3 little cylinders,springs etc.. its a 1 piece part.

Posted on May 06, 2010

  • 68 Answers

SOURCE: Pressure washer pulsates

Could well be the main jet slightly blocked in the carburettor.

Posted on Jun 10, 2010

  • 11 Answers

SOURCE: My electric washer keeps cutting in and out when

Have you checked to ensure that there are no leaks from your hose or any of the connections?

Posted on May 22, 2011

  • 1383 Answers

SOURCE: landa pressure washer LT 4035-4000 psi. Why is it losing pressure and continually pulsating?

If the pump is pulsating rapidly most likely valves are leaking or debris under valve keeping one or more from closing. If the pump pulsates slowly, comes up to pressure then low pressure then repeats, problem is pressure regulator /bypass. Or you could have a combination of both. Try lowering the pressure to lowest setting to see if slow pulsation stops. As parts age within pump and debris hinder operation you can no longer operate at full pressure. To make the pump last, use highest pressure as needed and everyday work using only 60 to 75 percent of capacity.

Posted on Mar 19, 2013

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1 Answer

Power washer 12poe-170 takes 5 minutes to build up max pressure


not a new gun but the nozzle removed and cleaned out. Pressure units work through a regulator that is controlled by the flow through the nozzle. If there is insufficient flow the regulator unloads the pump. It the flow is too low the regulator opens and closes as the pressure fluctuates. removing the blockage allows full flow and full operation of the regulator.

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1 Answer

Landa pressure washer LT 4035-4000 psi. Why is it losing pressure and continually pulsating?


If the pump is pulsating rapidly most likely valves are leaking or debris under valve keeping one or more from closing. If the pump pulsates slowly, comes up to pressure then low pressure then repeats, problem is pressure regulator /bypass. Or you could have a combination of both. Try lowering the pressure to lowest setting to see if slow pulsation stops. As parts age within pump and debris hinder operation you can no longer operate at full pressure. To make the pump last, use highest pressure as needed and everyday work using only 60 to 75 percent of capacity.

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sounds to me like some of the jets in the cab are plugged remove the carb and clean the jets and passages

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Honda presure washer is mixing gas in the oil of engine


Usually if gas is getting into the motor oil it is because the float valve isn't closing in the carburator when the float bowl is full and gas keeps on flowing into the cylinder and down into the crankcase. This can be caused by any peice of dirt or foreign matter getting between the needle valve and the seat so it can't close. It can also be because the float is damaged and won't float.

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My Karcher pressure washer pulsates and the water pressure is not as good as when I first got it


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1 Answer

Very low pesure


Make sure that all the air inside the hose is out, sometimes pressure washers have a hard time bleeding out the air. Lastly it could also be your pressure relief inside the valve body of the pump the spring can get bound up and basically stay on relief, like when you let off the trigger it doesnt just blow the line or stall the motor good luck\

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1 Answer

Pressure washer is pulsating when powered on


it just the presure building back up ,it will last years doing this,i would not worrie as replacing the presure pump will only be a temp fix and it will do it again ,most washes do this after a year or lots of use.

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Pump is pulsating , not pumping full pressure , water supply and screens checked out ok pump model sjv3g627-1 on a briggs 6.5 hp


Pulsating is usually due to a leak. It could be the pump leaking or the hose, gun or wand leaking. Is there water coming out of these anywhere it is not meant to?

It could also be a valve is not closing properly or a seal needs replacing.

Aug 06, 2009 | Garden

1 Answer

Washer want stay running. I can pull choke and it


mr fixit, I have pressure but it just want stay running

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