Clutch sponginess?
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Senior Member
Joined: Oct 2002
Posts: 977
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From: Smithfield RI
Car: Hardtop 84' z/95' Cheyenne
Engine: 305 H.O./4.3L
Transmission: 5-speed manual/Auto
Clutch sponginess?
Hey guys my 84 z has a T5 and the hydraulic setup. When i first bought the car it had no clutch at all so i bled the slave cylinder and i had my clutch back but that cylinder leaked. I bought a new slave cylinder and bled it and it worked fine but had a little bit of sponginess occasionally where it would grind reverse a little. Im gonna let it sit over night and rebleed the slave cylinder tommorow. Anyone experience this problem before?
Supreme Member

Joined: Jul 1999
Posts: 1,556
Likes: 28
From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
More than likely you still have a little air in the system. Bleeding a hydraulic clutch is somewhat problematic. You are trying to force air down a pipe, when it's natural tendency is to go up the pipe. Why they did not make some mechanism for bleeding these that actually works is beyond me.
What I have done (with some success.....) is run a hose from the bleeder valve to the resevoir, crack the bleeder, and just pump the pedal A LOT. This will force the air thru the system, and cycle the fluid. (having a friend help with this to make sure things stay put makes life easier as well....)
What I have done (with some success.....) is run a hose from the bleeder valve to the resevoir, crack the bleeder, and just pump the pedal A LOT. This will force the air thru the system, and cycle the fluid. (having a friend help with this to make sure things stay put makes life easier as well....)
Senior Member
Joined: Jun 2000
Posts: 998
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From: Tuscaloosa, AL
Car: 91Z, 91RS, '84 Jimmy
Engine: L98, 355, L98
Transmission: 700R, T56, 700R4
The Phenix Injector can probably be adapted to reverse-bleed a hydro clutch. It's made for reverse-bleeding brakes but it's still a hydraulic system....the only problem will be finding a way to seal it to the slave cylinder's bleeder hole.
I would just bleed the **** out of it.
I would just bleed the **** out of it.
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