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Alaska Jim · 04-07-2019, 10:40 PM

I tend to agree with 40Deluxe, if you have 20 in. of vac. at idle with steady needle on the gauge , a Vac. leak is unlikely, but, you do have a lean condition if you can still change the idle speed and quality by partly covering the top of the carb., or adding a bit of choke, as this effectively makes the idle mixture richer.

04-07-2019, 10:40 PM	#29
Alaska Jim Senior Member Join Date: May 2010 Location: Palmer, Alaska Posts: 1,575	Re: 3duce set up Ford 94 carburetors I tend to agree with 40Deluxe, if you have 20 in. of vac. at idle with steady needle on the gauge , a Vac. leak is unlikely, but, you do have a lean condition if you can still change the idle speed and quality by partly covering the top of the carb., or adding a bit of choke, as this effectively makes the idle mixture richer.