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  #1  
Old 09-28-2012, 04:43 PM
amphiduck amphiduck is offline
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Default '59 Power brakes make a woosh sound when depressed

I'm just now getting around to putting this bird back on the road for the first time in 10 years. Yesterday, I bled the brakes using the buddy system and heard a wooshing sound when the pedal was depressed. I'm not too familiar with the brake set up on these. It looks like there is a piston below the master cylinder on the firewall that is going in and out making the noise. I have factory drums all the way around. That "woosh" sound normal? Or do I have a pressure leak somewhere?
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  #2  
Old 09-28-2012, 05:41 PM
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tbird430 tbird430 is offline
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Sounds like a vacuum leak to me....
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  #3  
Old 09-28-2012, 05:47 PM
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jopizz jopizz is offline
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Check the brake booster under the dash. It could be leaking or the vacuum hose that goes to it is leaking.

John
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  #4  
Old 09-29-2012, 09:00 AM
KULTULZ
 
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http://www.autoshop101.com/forms/brake05.pdf

Scroll down to PG 17.
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