Thread: Vacuum reading
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Old 04-11-2021, 06:36 AM   #12
Terry,OH
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Default Re: Vacuum reading

The vacuum gauge is not simply a go or nogo gauge it should also be used to adjust the carburetor idle mixture adjustment screws. Under the same conditions you took your reading just slowly turn the mixture screws, one at a time, in or out until you get the highest vacuum reading.
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