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Old 01-05-2021, 11:58 AM   #4
SCOTI
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Join Date: Apr 2001
Location: DALLAS,TX
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Re: "wooshing" noise while pressing on brake pedal

I had this happen on my 74 once upon a time. It can happen when there's a seal issue on the booster diaphragm. If the brake power assist functions ok, it's no big deal. But if it's annoying you, you can always replace the booster w/a fresh part.
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