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Old 06-05-2015, 12:08 PM   #7
Gelbster
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Join Date: May 2014
Location: S.California
Posts: 2,027
AOS functionality tool

The old school tool was a slack tube manometer .There are several diy versions on the Forums:
Measured my crankcase vacuum...@ ~6" water - Rennlist Discussion Forums
Or you can emulate member "Ahsai" and use an electronic one:
http://www.amazon.com/Meters-PDMM01-Digital-Manometer-Measure/dp/B005FU5HFI/ref=redir_mobile_desktop/176-7096635-7269734?ie=UTF8&*Version*=1&*entries*=0
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