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

94 6spd losing clutch fluid

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Old Dec 25, 2003 | 09:20 PM
  #1  
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From: Newark De
Default 94 6spd losing clutch fluid

Hello all, I'm new to the forum. I purchased my 94 6spd about 5 months ago it's bone stock. I've had to add fluid to the clutch three times as of today. Here's the kicker, I can't find a leak anywhere! I'm wondering since the exhaust cat is close to the slave cylnder maybe the fluid is getting hot and boiling/evaporating? What type of fluid should I be using?
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Old Dec 25, 2003 | 09:47 PM
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Default Re: 94 6spd losing clutch fluid (Moto64g)

Welcome to the forum. I use Valvoline SynPower brake fluid, for my hydraulic clutch.
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Old Dec 25, 2003 | 10:10 PM
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Default Re: 94 6spd losing clutch fluid (STL94LT1)

it is leaking from the fire wall to the inside underneat your carpret. If you lift up the carpret you will find it wet there.

Bruce
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Old Dec 25, 2003 | 10:20 PM
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Default Re: 94 6spd losing clutch fluid (Moto64g)

When I bought my 94 it was leaking and two shops could not find where. I had my mechanic replace both the master and slave and that solved the problem.
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Old Dec 25, 2003 | 10:40 PM
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Default Re: 94 6spd losing clutch fluid (Moto64g)

Hey!!! Another Delawarean! Cool! :seeya

I am down here in Wyoming!

Here be the score... make damned sure the line isn't sitting on the cat shield. if so, it will slowly chafe and cause the stainless steel to wear off, then, the teflon liner will slowly soften, and cause some fluid to leach out.

over time, the line will simply rupture. ask me how I know. :D

if the line is bad, it is available as a seperate part. Just be damned sure that when the new hose is put in, that it is properly retained to the firewall, or this will happen again... and again...

Valvoline Synpower is da bom, yo!



[Modified by bogus, 10:42 PM 12/25/2003]
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Old Dec 25, 2003 | 11:47 PM
  #6  
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Default Re: 94 6spd losing clutch fluid (Moto64g)

Hi all and Happy Holidays,
I have got the exact same opportunity on my 94 6 speed now. Thanks for the advice. I was planning on repl,acing the master and slave, but will check the line thing around the cat. Being winter I am also planning on doing the whole clutch system, Better now than in In Season. :steering:
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Old Dec 26, 2003 | 12:22 AM
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From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
Default Re: 94 6spd losing clutch fluid (Moto64g)

our 94 LT1 Coupe (93K miles) also needed fluid when we bought it about 4 months ago. I've inspected everything and could not find any leaks, however, one place it might be leaking, which I wasn't able to check, is the front-seal of the slave cylinder into the expansion rubber seal which seals the push-rod.

Perhaps yours is leaking into the expansion rubber seal, and then maybe into the bell-housing, which might be mistaken for a slight oil leak.

Either way, especially since hydraulic problems can ruin your clutch and transmission syncro's, you might want to consider replacing the slave cylinder and master together -- as I have read it is best to replace both the master and slave together. Consider either GM/AC Delco or Napa (I have read that Napa has an identical unit to GM's, albeit with a better warranty).

If you do replace it, be sure to follow the special bleeding procedure (removal of slave or pressure bleed from slave up to master).

Information credit to this forum and zfdoc.com..

good luck
:flag
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Old Dec 26, 2003 | 03:08 AM
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Default Re: 94 6spd losing clutch fluid (theadmiral94)

im also having that problem. any one know how to identify if the it is the slave or the master cylinder before replacing both?
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Old Dec 26, 2003 | 01:12 PM
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From: Newark De
Default Re: 94 6spd losing clutch fluid (Bruce)

You are correct, it is leaking inside the firewall. I checked that when I first noticed fluid loss but I guess I didn't look close enough. Doesn't look like to difficult of a repair to make. Any words of wisdom on this repair? thanks alot.
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