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Pressure washer Won't hold pressure

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  • Contributor
  • 5 Answers

Have you tried turning the black knob to see if the presure increses?

Posted on Apr 28, 2013

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6ya6ya
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Posted on Jan 02, 2017

jj505
  • 195 Answers

SOURCE: pressure washer won`t pressure up

Have you tried adding 30 wheight pump oil,under 1 qrt usually

Posted on Mar 19, 2009

  • 92 Answers

SOURCE: Pressure washer lacks pressure initially?

Dear allbusiness9,
This problem is most probably due to a faulty Spill Valve( also called Control Valve). When the gun is released the spill valve is compressed and it either closes a micro switch or just opens from the bottom and keeps the water circulating. All spill valves keep the water circulating from the bottom part. Now when the gun is pulled (opened)...the spill valve extends and closes the bottom part, and thus water goes out of the nozzel. When you work with no nozzel, there is enough water flow to close the bottom part of the spill valve. So when the nozzel is placed back there is no chance that the bottom part leaks water. When the gun is started with the nozzel....the bottom part of a FAULTY spill valve,..will colapse and pressure drops. So to fix the fault you must change the Spill Valve. In some occasions, I also found that suction valves give this problem. A faulty sucktion valve will colapse under high pressure, and lets water pass the other way round.
But in my opinion and experience, your problem is in the Spill Valve.
Regards,
Fulltech.

Posted on Apr 23, 2009

  • 92 Answers

SOURCE: pressure washer won`t pressure up

Dear rustrick281,
It seems that your pump needs a good service. The sucktion and delivery valves got faulty. The high pressure seals and the low pressure seals must be renewed. The pistons must be checked for corrosion and cracks. Also the pistons or one of the pistons got stuck due to oncorrect lubrication. The swash plate that drives the pistons could have got loose. So the motor turns and the pump stays dead. So a good examination and service must be done to the pump. To renew all the parts I have mentioned, you must buy a PUMP KIT for you model. The pistons are not included in the pump kit....but hopefuly the pistons are still good. Also the oil inside the pump must be renewed.
Regards,
Fulltech.

Posted on May 07, 2009

  • 108 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

  • 553 Answers

SOURCE: low pressure on the pressure washer

Most likely your "O" rings or seals have gotten hard and are leaking. Sorry I don't know your equipment well enough to tell you how to change them but you can most likely find the info at your manufactures web site.

Posted on May 26, 2010

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