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Old 08-07-2020, 07:20 AM   #4
slonomo
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Yamaha
 
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,421
Default Re: G9 airflow problem

Having the stock air filter setup connected and sealed properly allows the carb to get the correct a/f ratio. If you allow more air in, it throws the mix off. Most bikes, atv's, and utv's are the same. Guys like to get a new ride and take the filter lid off without rejetting, same issue, it will run like crap. Tiny changes in fuel and air will throw these little carbs off. In a 350 Chevy, it's a little different story, most of them are over fueled lol.

Sounds like you got it fixed.

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