what is your Vacuum
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Rookie
Joined: Oct 2008
Posts: 85
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From: florida
what is your Vacuum
just wonder if anyone had done a vacuum test off the intake manifold yet?
i am to lazy right now to do a compression test on my engine so i did a vacuum test on it and i read a steady 20 at idea.
i am to lazy right now to do a compression test on my engine so i did a vacuum test on it and i read a steady 20 at idea.
Veteran
Joined: Sep 2006
Posts: 447
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From: Omaha
IIRC from my old engine days, 18-20 at idle is good as long as the needle is steady, you can read a lot about engine condition from the movement of the needle. Hell, I used to tune my old AMC 304 by vac alone.