C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Aug 9, 2002 | 12:05 AM
  #1  
SoupNazi's Avatar
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From: Warren Oh
Default Brakes

My brakes have went away, the pedal is very soft and goes almost to the floor. So I check the fluid and the front canister was empty and the back was full of coffee. I filled the front with dot 3 and it is a little better, not much though. If I pump the brakes 3 times I get full braking, but the pressure goes out quick. Do I need a new master cylinder, or did I get air in the lines? Maybe try to bleed the brakes before I go get a new master cylinder?
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Old Aug 9, 2002 | 12:29 AM
  #2  
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Default Re: Brakes (SoupNazi)

Sounds like it could be leaking or seeping somewhere. I would go over the whole sytem and find out then bleeding might help. If you got a leak it could be sucking air in after fluid leaks out. Are any of th rotors rusting? It could be a bad caliper. If you fluid is "coffee" id suggest a flush if you replace anything. :smash:
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Old Aug 9, 2002 | 12:31 AM
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From: Kyle TX (Because Mojo Made me fill it in)
Default Re: Brakes (blk90rdstr)

If you fluid is "coffee" id suggest a flush if you replace anything. :smash:


That would be my first step to make sure if I did replace anything I dont get that sludge into any new parts.
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Old Aug 9, 2002 | 01:21 AM
  #4  
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Default Re: Brakes (SoupNazi)

bleed them, check for fluid leaks, sounds like the Master Cylinder if not a leak.
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Old Aug 9, 2002 | 08:29 AM
  #5  
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Default Re: Brakes (SoupNazi)

My master cylinder showed the same symptoms before I replaced it. Turned out that the internal seals were shot.

Brakes are nothing to take for granted. Replacing the M/C is a relatively easy job. It's just a little time-consuming to bench bleed the M/C and then bleed all four calipers.

I would also agree that you should flush the entire system with new fluid: the moisture and other contaminants that cause the discoloration of the fluid are also what lead to corrosion and deterioration of the system.

Mark

:cheers:
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