Ok I recently replaced my clutch master cylinder because it was leaking a LOT of brake fluid. Now after I bled the clutch hydraulic system, everything was fine for about 3 or 4 days..... Then today all of a sudden the clutch pedal went all the way to the floor on the freeway and I couldnt shift into any gear.
I brought the car to my job today, and we bled the air out of the sysem AGAIN with a pressure bleeder , and for a while the pedal felt firm. When I get home, the pedal is already feeling lower, and I have to pump it up to get it to normal height.
Everything is tight, and the air is bled out, so, why do I STILL have to pump the CLUTCH pedal to get it to normal height?

 

Did you check the brakes for air - its a common reservoir.

 

check the slave cylinder, it might be the same age as your master cylinder which was replaced already

 

if the slave cylinder was bad would I notice the clutch/brake fluid going down in the reservoir? and I recently bled the brakes and they are firm and function properly.

 

+1 on checking the slave cylinder...

 

How would I know if the slave cylinder is bad? would it leak or do I take the whole thing apart?
Keep in mind , all these problems with the clutch pedal sinking to the floor happened, AFTER I REPLACED THE CLUTCH MASTER CYLINDER. Before replacing it, I had NO problems with the clutch pedal sinking at all, only I had a MAJOR brake leak which is why I replaced it. and back to the other question how do I check the slave cylinder?

 

When one end of the hydraulic circuit goes bad (clutch master cyl) and is replaced, the other end will tend to go bad right away too (slave cyl). I dunno why, but it's true.

Dave

 

Also check you clutch line.
Show us that you have the right stuff to be a FD owner.

 

I have heard this is true.... Nothing else makes any sense.... How would I check if the Slave cylinder is bad? I have found the slave, but I do not wanna replace it until I am SURE its bad.
There are 2 bolts holding it together.... If i disconnect them, will the fluid come spilling out?

 

No. The fluid will drain out only when you remove the clutch hose. Or if you push the clutch pedal in with nothing to stop the piston, so don't do that.

DAve

 

When the fluid does come out of the clutch pipe, it shouldnt ALL leak out at once till it empties the master cylinder right? I dont wanna screw things up =/

Lastbut not least.... I barley moved the slave cylinder back, and the boot seems to be fine, but do I need to pull the boot back to see if its leaky or bad?

 

#1-are you loosing any fluid?

 

No, thts the bizare thing. I am not losing any fluid from the reservoir, but when ever I bleed the clutch system, it gets firm, for a while then the clutch pedal sinks to the floor again.Im still in the process of check the slace cylinder

 

its the cylinder. I was swapping trannies once and i just had gotten done with the job, I push the pedal down and it comes back fine. I pushed it down really fast and then it didnt come up. I took the cylinder off the old tranny and put it on and worked perfectly.

 

Ok, I am going to replace the slave cylinder, would it smarter to buy a rebuilt one, or brand new from the dealer?

 

1(888) 533-3400...Ask for Ray Crowe ;-)

 

Does any one know the correct SPEED BLEEDER size to use for the clutch slave cylinder?

 

In my case, I replaced the slave but to no avail. It ended up being the clutch master cylinder. It drove me nuts for a week. Before you buy a rebuilt unit, open yours up and have a boo inside. Mine was full of crap and broken down fluid and seal residue. The rebuild kit is uber cheap and to rebuild it is a piece of cake. Once you're in there and soaked in brake fluid, you might as well open up the slave cylinder. They'd both be at that age where a bit of TLC is needed. On my car, I did the brake master cylinder upgrade at the same time and boy did that add to the fun. You should also invest in a new clutch flex hose. Mine had tiny little cracks and moist spots, which I'm sure may have been porous enough to allow air back in too.

 

I have already replaced the clutch master, and it works great but the pedal starts going to the floor, so im replacing the slave cylinder as well.
PLEASE does any one know if there is a SPEED BLEEDER for the clutch slave cylinder? and if so what size it is?
I like the speed bleeder , because it is idiot proof, and very cheap and clean..... any one got any info?

 

I used the import bleeder from this site.

http://www.motiveproducts.com/02bleeders.html

 

alright thanks for the info.I am also going to replace a clutch line that I damaged a bolt while replacing the master cylinder. it cost like $10 so I figure why not

 

ya, turns out it WAS the slave cylinder. Bleeding the air from the system took less then half the time it took when I replaced the clutch master cylinder. Thanks for the help!

 

Glad to hear it worked out for ya. I hate buying things just to see if itll remedy the problem. In this case it worked out for you but for some reason it never works out for me haha