Clutch Pressure Problems. Need help ASAP (Its my daily)

[AsharC]

Hey guys,

Lately its been hard for me to get my car into gear, so I figured it was either my master or slave. I replaced my slave, no luck. Then went on to the master and saw the pedal bracket was cracked. Replaced all the bracket and the master.

Now here is the real issue, I went through the whole bleeding process where there is a pump at the bottom and the air bubbles are all pushed to the top. With all that out of the way, the pedal is soft, and it wont go into gear. Kept pumping the pedal, it would get stiff, not enough to get into gear. If I hold the pedal for about 5-10 seconds it loses all its pressure.

What can it be?

Thanks
Ashar

[jlevie]

Did you use a new master & slave, or used parts? The loss of pressure when holding pressure on the pedal means a leak some where.

[AsharC]

Both are brand new.

[jlevie]

New as in brand new or new as in reman? I don't use remans for this as I've seen them "bad out of the box". Work the pedal a few times, letting it sink to the floor. Then check for leaks at the lines and slave. You can dismount the slave, clamp it shut with c-clamp to see if it is leaking on the bell housing side. If you can't find any leaks, replace the master cylinder.

[AsharC]

It is new as in brand new. I'll look for the leaks when i get back to the car.

[AsharC]

I didn't find any leaks so i'll be buying a new master soon.

[KMOSES]

Had this same thing happen. Replaced the slave cylinder and then the master cylinder. It turns out that during the bleeding process before replacing the master cylinder, it was pumping rust and other crap into my new slave cylinder. Then when I installed the new master cylinder some of the crap flowed back up the line into my new master cylinder during bleeding.
I ended up replacing everything at once and the problems went away.

[AsharC]

Including the lines? Or both at the same time?

[KMOSES]

Removed the clutch master and slave cylinders, flushed line with brake cleaner, installed new clutch master and slave cylinders.

After everything was working I disassembled the first set of replacement master and slave, that is when I found the rust and crud and cut cup seal in the replacement master cylinder. It was a hard lesson to learn but one I will not soon forget. It sucks removing the clutch master and trying to get to that fitting that goes through the firewall!

[AsharC]

All the parts are coming in the AM so I'll see how it goes.

[AsharC]

No luck, I replaced the master and still having these issues. The brake fluid is coming out clean so i don't think there is rust or anything.

I have replaced the slave about a month ago, along with the MC. Within that month, what I though was the MC was going bad. I replaced the MC, then I started to have these pressure issues. Then I went on to replacing the slave, and the problem still continues. After replacing the MC again, I still have the issues and thats where I am at.

I gravity bled the system.

[KMOSES]

I don't think a gravity bleed will not work for this. I had a hell of a time with me under the car and someone pumping the clutch pedal. What worked the best was a strap clamp I made that restricts the slave cylinder shaft movement so it can be bled while hanging under the car. This allows the bleeder port to be the highest point of the slave cylinder. Materials needed;
2) 5" long 5/16-18 bolts and 4 5/16-18 nuts
1) 5" x 1 x 3/8" piece of steel

Drill two 3/8" holes in the steel the same distance apart as the slave cylinder mounting holes. Insert the 5/16-18 bolts through the slave cylinder mounting holes and one nut on each bolt. Insert the bolts through the bolt holes you just drilled. Install the other nuts and tighten so the metal plate is even with the slave cylinder mounting surface. Now the clutch circut can be bled with the slave cylinder hanging down and the bleed port pointing up. The metal plate will retain the slave cylinder shaft.

[AsharC]

I am very limited to supplies and transportation. I am dorming at my college, and none of my roommates have cars and my car doesn't move. I also don't have any special tools other then a craftsmen tool set.

I'll see what I can find. In the mean time I ordered a new hard line from the master to the slave and a SS slave line, just in case any of them were leaking.

[AsharC]

I am very limited to supplies and transportation. I am dorming at my college, and none of my roommates have cars and my car doesn't move. I also don't have any special tools other then a craftsmen tool set.

I'll see what I can find. In the mean time I ordered a new hard line from the master to the slave and a SS slave line, just in case any of them were leaking.

[jlevie]

If the master cylinder and slave are good, there are no leaks, and the soft lines are good you can self-bleed the system. Grab the clutch pedal and pump it 75-100 times. If the clutch pedal is still soft the master cylinder could be bad or the clutch could be bad.