Reply To: Compression test results in relation to reed valves

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June 23, 2024 at 11:41 pm #288566
JACQUES
Participant

    the downstroke normaly  refills the cyl  cavity with  air  or  air/fuel to be compressed. …but keep in mind that at the same time  the exhaust ports are also open to atmospheric pressure   and whether or not  air   or air-fuel    actually comes from the downstroke…… the cyl would be  filled anyway  with air or exhaust fumes  if a fresh load never entered via the intake ports….be it air… air-fuel

    the upstroke would pressurized whatever    was in the cyl …. regardless of  reeds being good or bad.

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