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Re: BMW 745i Brake Booster Issue
Posted to Technical Theory Forum on 4/9/2018 1 Reply

to test a brake booster , find a way to connect your vacuum hand pump , evacuate to 16 or so inches of vacuum , it should hold , now , go in the car , push lightly and hold , vacuum will go down 2 or 3 inches and hold , [ on a good booster ] push harder , it w... Login to read more.

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