Vacuum gauge reading

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pinzinator
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Joined: Thu Jul 29, 2004 3:12 pm
Location: Indio, California

Vacuum gauge reading

Post by pinzinator »

What would be considered a normal reading on a vacuum gauge when connected to the intake? How steady should the needle be on a good engine?
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rmel
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Re: Vacuum gauge reading

Post by rmel »

Assuming your vacuum gauge is calibrated in Inches of Mercury, at idle 800 -- 1,000 RPM should be about -17 to -20 InHG.
MAP readings are going to be strongly dependent upon load and RPM (and leaks).
Puller: 71' 710K 2.7L EFI aka Mozo
Follower: Sankey MK 3, 3/4 Tonne
Rescue Pinz: 73' 712MK

Driver: Ron // KO0Q
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