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Re: Carter BBD Factory Settings
You mean the idle mixture screws?
Usually the base line setting is to turn the screws in all the way and then back them out one and a half turns.
At that point you ca turn them a bit to fine tune them. One way to do so is to warm up the engine, and plug in a vacuum gauge to a manifold vacuum source (this is a souce that sucks most at idle)
You should show about 18-22 mmHg of vacuum at idle. Then turn the mixture screws in or your a bit until you reach the highest possible vacuum reading at a normal idle speed.
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