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#10
07-31-2019, 07:50 AM
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Skip in vacuum reading can also be the PCV valve plumbed into a single runner
7 cylinders will be slightly higher and smooth then the one cylinder will hit, it has to draw a vacuum in the PCV line then the PCV slams shut which you can also HEAR and also see on a vacuum gauge Google how a PCV valve works to see internals As RPM increases the frequency increases and your ability to detect it diminishes .
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........... The More You Follow The Herd The Less You Can Be In The Lead .......... Last edited by Formulas; 07-31-2019 at 08:02 AM. |
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