I was just working on my dad's 95 993. Since it was sitting so long, I wanted to change the clutch and brake fluids too. As my brother was pumping the clutch a few times, holding the pedal, release the fluid. After he pulls the pedal back up, and I tell him to pump it, the pedal just goes right to the floor with some force, it feels just like the force that you have to use to pull the pedal back up after releasing the fluid. Would this problem be the slave cylinder? When I tell my brother manual pump it with his hands, the fluid can still come out of the slave but I dont hear anything.

 

When bleeding brakes & clutch, you DO NOT put the pedal all the way to the floor. You can damage the seals on the slaves. Yes, it sounds like you did. Or you sucked in some air by letting the fluid get low.

You can try to bleed it again, go slow, & make sure you keep the fluid high in the res, as the clutch fluid is high up on it.

 

I just installed a new slave cylinder, trying to bleed it now. But now I have another issue, I am trying to depress the clutch, and it is really heavy. It is so stiff to the point that I cant depress the pedal.