Question about Karcher 2500 PSI Pressure Washer

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Gas pressure washer will not start

I have a brand new(never used) Karcher 2,500 PSI power washer with a 5 HP Honda engine that sat in my shed for a couple of years(unused). I finally got around to trying to use it, added oil, gas, pulled the choke closed, released the pressure in the hose and pulled the cord about a hundred times. It just won't start. I even pulled the spark plug, and sprayed starting fluid(ether) into the combustion chamber and it wouldn't even turn over once. Any ideas?

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One thing I saw one thing that you did not list did you you turn the start switch on its usually on the right side of the motor, If not switch will ground out coil and no spark is received.

Posted on Apr 05, 2013

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I have a 5hp honda power washer sat for 2 years it will only run if I spray gas in the carb as soon as I stop spraying the engine stops I have took off carb and cleaned it

Posted on May 23, 2011

  • Tony Lee Guerrero Apr 05, 2013

    Yeah you may need a new carb or it needs a good cleaning.

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I have 5.5hp briggs&stratton pressure washer Simoniz S2350. Would you know the PSI for this item?


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Due to the power required to produce more than 2,500 PSI a 5.5 HP engine would lose engine speed as it can not produce enough power for the higher PSI output. It is a matter of hydraulics vs input power.

Any gas pressure washer will produce lower pressure with lower engine RPM. Looking at S2350 as your model number yours may be set to 2,350 PSI by Simoniz.

Thanks for using FixYa.

Kelly

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Hello:
Have you tried changing the gas, Especially, if it has been in the machine of a while. Also some Honda engines will not start if the oil is low. Also try removing the high pressure hose before you start it? Do not run it very long without water flowing through the pump, though.

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