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Does needle straight diameter affect idle mixture?

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10-18-2018, 04:49 PM

Davehuge

Senior Member

Join Date: May 2017

Location: English but now based in South of France.

Posts: 470

Does needle straight diameter affect idle mixture?

Here's something that's been bugging me for a while...

On the Keihin PWK carb, does the diameter of the straight portion of the needle affect the mixture of the idle circuit (pilot jet and air screw)?

Thanks, Dave.

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