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Discussion Starter · #1 ·
Purchased a reman pb booster for my 68 coup from autozone. Itcame with a pamphlet saying it was tested after rebuilding for quality. but when i hook my vacum tester to it it holds no vacume and it aint even in the car yet. Dose anybody know if testing outside of the car like this is a valid way before it is installed
 

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Not sure if that's a valid test. Does it have the check valve on it? That's what holds the vacuum and allows multiple pumps on the pedal.
 
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