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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Brake Problem

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Old Mar 22, 2009 | 07:56 AM
  #1  
rmalottwtes30's Avatar
rmalottwtes30
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From: Cincinnati Ohio
Brake Problem

When I hit my brakes they seem kind of spongy. When I hit them real hard I can hear a little noise, like a whoosh noise, or maybe like air. If I pump the brakes like 3 or 4 times I will get a full pedal and have better braking power. Without pumping them I really have to hit them hard to stop fast.

I have replaced the vacuum pump and master cylinder. Could this be from a leaking caliper or something, or bad booster?
 
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Old Mar 22, 2009 | 08:15 AM
  #2  
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adjust your rear shoes, then try bleeding the whole system. don't crack the lines, to do this use the bleeders. brake fluid picks up moisture, so it's a good idea to keep bleeding. and adding fluid until it comes out clean.
 
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Old Mar 22, 2009 | 09:50 AM
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Sounds like a bad booster
 
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Old Mar 22, 2009 | 10:31 AM
  #4  
rmalottwtes30's Avatar
rmalottwtes30
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Can I update my master cylinder and booster to one from a newer truck? Will I have to change anything else besides the booster and master cylinder?
 
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