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On 24 Mar 99, at 19:26, Sonny8oy@aol.com wrote: > how important is the vacuum advance on the distributor of a stock FI > engine? what does it do? mine failed the test in bentley. so did my two > spares, but on them i could at least hear/feel there was some kind of > suction there when i released my finger. the vacuum adv gives you much improved gas mileage. What was the test that yours failed. I test them by sucking on a clean hose that I attach to them and seeing if they move the dist breaker plate. Then I stop off the hose with my tongue and watch to see if the breaker plate creeps back. Unless it creeps back quickly, it is servicable. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, SubjeV].=bscribe