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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Liquid in power booster

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Old Oct 21, 2012 | 11:52 PM
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69 F100 Cali's Avatar
69 F100 Cali
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From: Anacortes
Liquid in power booster

I had a vacuum leak on my power booster so I replaced the check valve and it seemed to have fixed it at the moment however the MC had signs of leaking at some point so while I had the valve off I stuck a piece of hose into the booster and I got what looked like engine oil on it. I want to know if even though it's probably brake fluid it's possible that with the vacuum leak it could have sucked oil into itself.

69 f250 with stock 390, vacuum line comes from intake.
 
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Old Oct 22, 2012 | 12:02 AM
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It was likely brake fluid, it's fairly common for a master cylinder to leak into a booster when it fails.
 
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Old Oct 22, 2012 | 12:36 AM
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Is it possible though? Also can I just clean out the booster and only replace the MC.
 
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