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Re: Proper vacuum (stock '02) (archive)
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Posted by 76er opps on June 25, 2000 at 19:03:36:

In Reply to: Proper vacuum (stock '02) posted by John Weese on June 25, 2000 at 12:59:39:

Sorry about that last post - I screwed up. If you're getting 18-22" Hg of manifold vacuum then that's good. As long as the needle is steady and doesn't fluctuate.
It doesn't sound like you have any vacuum leaks. Make sure you're testing manifol vacuum - any vacuum port between the throttle plate and intake valve. You may have been testing "ported" vacuum when you only got 10" Hg. If road testing - leave distributor vacuum advance plugged in.

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