Question about Psi 2500 Mobile Pressure Washer 5hp Honda Engine

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No high preasure at nozzle

No high preasure on my 5hp honda preasure washer not used much is pump bad

Posted by john_j_troia on

  • john_j_troia May 27, 2009

    Water does come out of nozzle but not at high preasure, I did remove nozzle and change hose and gun but still do not have high preasure coming out of nozzle, I have preasure but not enough to remove dirt off of wood deck or concrete.

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Mike Squire

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Try starting the washer up without a nozzle clicked in and purging water through the pump, shut it down and install the nozzle and restart, if the motor lugs then it is making pressure, if the pump squirts water out of the by-pass immediately and or constantly it may be a stuck bypass and not a bad pump.

Posted on May 27, 2009

  • Mike Squire May 27, 2009

    Ok, if the by-pass does not open to releave the pressure and cool the pump it could be a failed pump. Start it up and purge water all the way through the lines then let go of the trigger, if water comes out of the by-pass (sometimes it takes a couple minutes) then the pump may indeed have failed.

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