At idle. Rev it and pressure in intake increases (or for you, Bill, vacuum falls). Vacuum is at max when throttle plates closed. At full throttle, vacuum is minimum. This is the whole point of the vacuum affecting advance and fuel enrichment via CPR. content22207 wrote: >PRV produces 17 plus inches -- more than enough to advance a rotor button. > > To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/DMCForum/ * To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx <mailto:DMCForum-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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