Question about RTO 1800 PSI Pressure Washer

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Ryobi 3000 psi pressure washer detergent injector

The detergent injector is not pulling detergent into the washer?

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Most detergent injectors work by the venturi system. That is that the detergent is drawn into the stream by the forward flow of the water thru a very narrow port after the water passes thru the pump. This system works best when the pressure at the tip of the wand is low. Trying using a very large tip to draw in and apply the detergent, then remove injector and rinse with high pressure. Not good for the pump but to apply soap reliably under high pressure the soap needs to be injected through the intake of the pump. enjoy

Posted on Dec 01, 2008

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Just check the machine for soap with the high pressure hose disconnected first, if soap comes through then the problem is with the hose gun or lance nozzles.
if no soap still when disconnecting the hose, then the ball bearing will be stuck in the house of the soap valve , take the soap pipe off and push the ball bearing with a paper clip or thin object.

Posted on Jul 04, 2009

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If you need to replace the spring then replace the entire kit. Ball, spring and oring. Most pumps that come on the newer TRoy bilts are AR RMW pumps. the parts diagram can be found here at http://www.arnorthamerica.com/manuals/rmw-om%201006.pdf
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www.allpartsinc.com/ProductDesc.aspx?code=KTRI91351

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1 Answer

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If it will not draw at low presser, it is either stopped up with debres, or the check ball inside the injector is stuck. The injector is the little device that is just before the outlet where the pressure hose hooks up. These always have a small metal ball, held in place with a tiny spring. This ball is there to prevent pressurized water from shooting back into the detergent tank. The ball and seat that it presses against can get stuck together with old detergent residues, calcified deposits from the water or even rust.

Use a small crescent wrench to take it apart -- or if you prefer, find the right size box end/open end (metric) wrench. Be very cautious as it comes apart because that little spring can leap out and they are hard to find.
I hope this is helpful to you. If it is, please take a sec to rate me. Thanks!
Don

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2 Answers

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1 Answer

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1 Answer

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