car sat for a week, now no clutch pedal pressure.

[Denji]

Okay, I left on a trip out of town about a week ago, car ran fine and clutch felt fine. So i got back today and decided to start my baby up and take it for a ride. Well it started fine, then i went to put it into reverse the clutch just sank to the ground and wouldnt come back up... This was a little confusing because it hadnt been driven in a week and it was driving fine last time i had taken it for a spin. It felt kinda the same as when my master cylinder went bad, so i first checked that, no noticeable leaks, checked reservoir, seemed fine. I didnt replace the slave cylinder since i got the car so thats still in question, however, i couldnt find any signs of leaking fluid anywhere, however, after bleeding the clutch a couple times the clutch would come back up, but catches WAY low.
It started raining pretty hard so i didnt get a good bleed on it, so it might get better with a few more rounds at it. The main thing im wondering is what caused it to get like that in the first place? Naturally i feel like the slave cylinder is a good place to start, but id like to hear the opinions from some of you before i go out there when it stops raining. Thanks guys, hopefully its something i can take out tomorrow so i can have my car back. Any posts would be greatly appreciated. - Brandon

 

[BISHILVR]

Master and slave cylinders can go bad without leaking fluid. The fluid in the cylinders can actually blow by the seals instead of moving the piston in the slave cylinder. That would be my first place to start, with a new slave cylinder. Why it went like it did is up for grabs, everything has it's last operating cycle. (including you)

 

[Defiant]

Pull back the dust cover on the slave, and find the missing fluid.
Replace your slave cylinder, and get rid of the accumulator while you're at it.
http://www.roadraceengineering.com/instructions/2gclutchlineinstructions.htm
If the slave's dry, check the cover on the master cylinder (inside the car) and look for a wet carpet. Then, replace the master.

 

[Denji]

went out and checked the slave cylinder this morning when i could actually see, and when i pulled back the slave cylinder dust cover, there was a small amount of hydraulic fluid in there. I think thats the problem, all the lines look good, no leaking from the master cylinder that i had recently replaced.

(in response to the earlier post, i dont think any fluid is leaking by the seals, because if this was the case, bleeding it as i did this morning wouldnt have made the car driveable like it did, and i drove it today to go pick up my new slave cylinder)

Thanks for the help, i will post back to say if this solves the problem for good.