This is a new one on me, but I drove my sisters little Geo Prizm, which is a Toyota Corolla with different badges on it. Its a '92, runs good, everything was fine. The other morning I noticed the clutch was engaging right at the bottom of the pedal and now it won't completely disengage. I checked the fluid in the clutch master cylinder, its fine, checked the whole system for leaks, didn't see any. Thought I might get lucky and find some air in it cause the pedal feels spongy, so I loosen the bleeder valve on the slave cylinder and get my buddy to pump the pedal and nothin. No fluid, no air, nothing. So I take the bleeder valve all the way out, repeat previous step, and nothin. So I take the line off of the slave cylinder and fluid comes pouring out of that. The fluid moves in the master cylinder when you pump the pedal and it moves the actuating rod somewhat when you push the pedal. Checked the bleeder valve to make sure its not stopped up. So my question is, WTF is the problem? Why no fluid come out of the bleeder valve, why no air. The pedal feels the same with the valve closed or open. I stuck a little allen wrench down the hole the valve goes in and it came back out with fluid on it, so again I ask, WTF?

 

Just a guess here, but my guess would be a presure leak someplace in the system. When you open the cap there it shoots fluid out the path of least resistance. By the same token, when the cap is on wherever the leak is becomes the path of least resistance. Might even be someplace that is not leaking fluid just air. Push the pedal in it pushe air out, let the pedal up it sucks air back in.

This is completley just a guess cause I'm like you, I don't know of any other explanation.

 

IDK, if thats the case, you'd think some fluid would be leaking somewhere. I'm more confused now after looking at it then I was before I started workin on it

 

Well, and this is a long shot, I've seen wheel cylinders do something similar. They develop little leaks and the fluid goes out through the dust boots. Not enough to notice a drastic drop in fluid level but enough to drop the pressure and cause things like what you describing.

I vote slave cylinder.

 

The slave cylinder is gonna be the easiest one to replace so hopefully ur right Johnny. Its almost to cold to mess with it though.

 

AAhhhh Bull hooey, if johnny can swap motors in the snow you can do this in a little cold.

 

This man makes an excellent point.

 

I can't help that the brain fairy passed Johnny by when he was just a boy

 

 

We all thought the same thing, but we didn't want to say anything in front of him.