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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 07-19-2013, 03:47 PM
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Master Cylinder - Booster Leak

Hello, Before I get into buying parts like crazy for no reason I would like to ask about this: Couple of days ago while driving downhill coming to a stop and waiting for traffic my brake pedal started to go down to the floor. replaced 2 rear wheel cylinder one was leaking bad 2 months ago.

Noticed as well that between the master cylinder and the power booster brake fluid leaking (picture below) the vacuum hose it's ok not broken or craked

My question: which one should be the problem causing the leak? master cylinder or power booster? and if this will be the cause for the pedal going to the floor.

Thanks !

Click the image to open in full size.
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Old 07-19-2013, 03:49 PM
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Master cylinder.... There should be no oil or brake fluid in the booster.
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Old 07-19-2013, 03:52 PM
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Thanks! I was going to get the power booster, good I asked before
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Old 07-19-2013, 04:32 PM
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Get a new booster too while you're at it. The master cylinder will leak into the booster and fill it with brake fluid.
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Old 07-19-2013, 05:02 PM
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Quote:
Originally Posted by Lead Head View Post
Get a new booster too while you're at it. The master cylinder will leak into the booster and fill it with brake fluid.
I agree as long as that has been leaking get both.

Craig
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Old 07-19-2013, 05:02 PM
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