5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

brake boost question

Old 08-24-2007, 08:05 PM
  #1  
dcp8750
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Default brake boost question

I believe I have brake fluid in the booster, does this mean that the whole master cyclinder is bad or just maybe the gasketbetween the cyclinder and booster is bad??????????
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Old 08-24-2007, 08:41 PM
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PRO50SC
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Default RE: brake boost question

What makes you think so?
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Old 08-25-2007, 10:19 AM
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Default RE: brake boost question

which part? I have a vacuum reservior installed so I have a hose running from the upper intake to the reservoir, then a hose back to the booster. I have found fluid in the vacuum line hose that runs back to the upper intake. So there is fluid coming out of the booster into the reservoir back into the upper intake. Unless there is supposed to be fluid in the booster, but I dont think there is supposed to be.
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Old 08-25-2007, 11:32 AM
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Default RE: brake boost question

What year car? What's the need for the extra vac res? The only way brake fluid can be getting into the booster is thru the back of the master cylinder where it bolts up. Pull the master cylinder forward and see if it's wet back there.
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Old 08-26-2007, 07:25 AM
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Default RE: brake boost question

its 1995 327 cobra, with v-2. I was told thruresearch that I needed the reservior, plus before the reservior I had zero brakes, now my brakes are awesome. but I will pull the master off the booster to check. Nothing will leak out when I detach the two correct????
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