Question about Ridgid Rd80702 3300 Psi 3.0 Gpm 7 Hp Subaru Ex21fi Ohc Gas Powered

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Ridgid pressure washer motor runs choppy when choke is disengaged

The pressure washer is actually a 3300 psi and 2.8 gpm, however, starts right up when the choke is engaged, but when I turn the choke off (disengage it), the motor begins to run choppy and shake. In order to stop the shake, I need to engage the choke slightly until i reach the "sweet spot" when it stops shaking abruptly, which means that the joke is always on....any ideas?

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The choke reduces the air flow into the carb. If you are having problems with the choke off, it means that not enough fuel is getting into the engine and it is running lean. When you choke it, the reduced air flow causes the mixture to be correct and it runs fine.

Posted on Feb 09, 2014

Testimonial: "Thank you for your response! I will make sure the fuel lines are clear and I will clean the carb as well."

  • Brad Brown Feb 09, 2014

    The choke reduces the airflow through the carb. If it wont run without the choke being partially closed, the engine does not have enough fuel getting to it. It is running lean.



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