Generac 17kw unit surging

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aparker
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Good afternoon,

I have a 17kw generac unit that is surging. I've replaced the main mother board and the motor stepper assembly but there is no change. What else could be causing this surging? Thank you for your help!
Chris
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Can you post some info about the generator? Model/serial would be the most helpful.
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aparker
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Thank you for the reply! The generator is a Guardian 17kw unit. Model number is 0055230, and the serial number is 5132203.
Chris
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These older units weren't really known for surging, so that makes me think fuel problem, or possibly a bad ignition coil sending a weird RPM signal to the controller.

Can you test the fuel pressure?
Generac tech for over 12 years. I'm here to help!
"The only source of knowledge is experience" -Albert Einstein
Looking for Generac parts? Gentek Power offers the full line of Generac replacement parts! Shop Gentek Power Generac Parts
A list of my favorite Generator & Electrical Tools! https://www.amazon.com/shop/gentek_power
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