Clutch Suddenly Has No Pressure?? Help!?

[roel03]

While driving home my clutch suddenly became extremely lightweight. Some info on the car is:

Spec Stage 3
Lightweight Spec Flywheel
OEM Slave and Master
KA24DE

The clutch is about 3 months old and broken in properly. Suddenly when I was coming up to a light it went completely soft. If you guys have driven a Stage 3 its pretty stiff (for me at least) so it was a complete difference. Also the car starts up fine, does not grind or have trouble shifting even after this but pressure is gone and the disengagement point is completely different.

Help as this is my only car and have to work tomorrow!!
Thanks to all!

[s13silvia123]

check clutch slave, clutch master cylinder for any leaks

[SexPanda]

Check your slave cylinder. A heavy duty clutch with a stock slave cylinder could have worn it out. You having to put fluid in it?

Check the slave cylinder for fluid. No fluid, try bleeding the system. That doesnt help, look at the master cylinder for leaks of some kind.

That doesnt help, look at your clutch fork.

Besides that, wish I could help more.

EDIT: Shin Chan beat me to it... KAAHHNNN!!!!

[roel03]

Ill look into it and then update the thread.

If anyone comes up with any ideas, feel free to post.

[roel03]

About to replace the slave in the next hour. Lets hope thats the problem.

[SexPanda]

I replaced the slave cylinder on my WRX, and 4 times on my s13 lol.

[Slammed Assassin]

also check the lines for any leaks.

[roel03]

Will do.

I also own a WRX and a S14!!

[roel03]

UPDATE:

Went to remove the original slave cylinder but was unsuccessful in breaking the bolts. So as for that I will give it another shot tomorrow. Any suggestions? I couldnt get any good angles at them and the rubber hose.

Also I bled the original slave for about 15 minutes and I couldn't get the pedal any better than it originally was. Does that confirm its the slave?

[SexPanda]

Did you notice any leaks anywhere?

[roel03]

I dont think so. There was no air or fluid coming from anywhere but the bleeder screw on the slave cylinder.

[tf_90s13]

when u bleed the system, did u put a hose from the nipple leading to a container with fluid in it

[monsta_civic]

I bleed mine for 30 min and finally had to get someone to help me! get someone to help you bleed it through and get a couple bottles through it, and look under the dash aroung the rubber seal against the firewall, on your clutch master cylinder, by the pedal if that is leaking, then replace it thats your problem...

[roel03]

Ill go check that right now.

And yesterday. no I did not put a hose to a bottle, but I will do that today.

Also whenever the clutch is engaged the slave cylinder squeaks.

[monsta_civic]

If you get a frend, get him/her to open the valve on the slave cylinder and do it like this, you pump the pedal, 3-5 times while valve is close, then you hold the pedal down and get your buddy to open the valve, till pedal hits the floor, then get you friend to close valve again. repeat till you get a couple bottles of brake fluid through it, you will notice some air come out, or your clutch master cylinder/slave cylinder has gone south. after that idk what to tell you other than something happened to your tranny or clutch set up in the transmission.

[s13gebala]

i have a stage 4 and a brand new clutch slave cylinder lasted about 1.3k miles.

dirt got inside it somehow.

[roel03]

Just switched the slave. Now I am in the bleeding process.

Does it need to be done in a bottle of water? I cant find a hose to fit the bleeder.

[tf_90s13]

u can do it with the same bottle of fluid, u can clamp the end of the hose to the nipple if the hose is soft. maybe ur pressure plate went out if its not the slave cylender or master cylender.

[roel03]

Lets hope not.

EDIT: Searching says when the pressure plate is gone, it will grind going in and out of gears. I'm having nowhere near that problem. It switches gears fine and the cars moves with no gas, but only the clutch if I want it to.

[tf_90s13]

if the teeth were the throughout bearing goes. sorry my spelling sucks. if they come of the clip that holds them in. ive seen it happen.the same thing hapend to the pedal.

[roel03]

Well I changed the slave and bled and bled and bled. Nothing.

Would the master cause this problem? Should I go with changing that next?

Anything pedal related?

[two40silvia]

i had this problem in my supra. we bled it for hours literally. then it ended up being the pedal itself wasnt screwed in properly or something to that effect. i cant remember exactly. its been awhile.

[roel03]

What was wrong with the pedal so I can check?

[Tantwoforty]

oh, while your down there rip out that fucking damper thing if you haven't already. i bled my clutch for 4 hrs and 5 bottles and still couldent get any pressure then i rage searched and found its retarded. i took it out, bent the hard line around onto the bracket and screwed it on, it bled in like 2 pumps... i actually drove to a very large bridge and hucked it off of it in rage

her a little guide for you
THE GARAGE GUIDES - Remove Your Clutch Damper (http://garage.projectraine.com/content_guides/240_clutchdamper/clutchdamper.html)

hope that helps :/

[two40silvia]

What was wrong with the pedal so I can check?
i dont quite remember but there was a screw that came lose. it was something really retarded. if i remember correctly it had to do with the master cylinder too...

[roel03]

The dampener has never been there. My car used to be automatic a couple years back so it was never installed.

[S-Nation S13]

hm.. its it own system theres pretty much the clutch pedal , clutch master cylinder, then the clutch itself...this happened to my bros s14 it was faulty clutch master cylinder..guess it wasnt creating enough pressure ..with the clutch down and in first the car would somehow stall out..clutch fade

[roboticnissan]

it has to be master or slave replace both bleed the right way and BOOM your fixed

[roel03]

Master is next.

Some people are saying clutch fork or pivot bearing?? The slave pushed the fort all the way and normally. I really hope I dont have to drop the tranny.

[T_wei]

nothing wrong with the tranny

if its not your slave then its your master. I did mine slave last saturday fixed the problem. Make you bleed it right. Have 2 guys to help you out.

Check for brake fuild leaks where your clutch. If it's your master its going be leaking out under your driver side.

[roel03]

I think I was bleeding it wrong to tell you the truth.

[druthafoo]

I've dealt with a this retardedness before.

We did a 5 spd swap on a friend's s14 and the clutch lines wouldnt hold pressure. When we did the swap we bought a brand new master and used the same slave. Bled the system and pressure would eventually die off. We though it was the slave so we got another one; it didnt fix the problem. Got another; didnt fix it. Did it again; slave number 3 was bad. We never realized that perhaps it was the master (we were new to this whole doing work on our own car thing) that went bad. After 4 new slaves, we got a new master and bam it worked perfectly. Working with the clutch hydraulic system is so easy too.

Oh yea, if you havent yet.... you might as well by pass the dampener as well.

BTW make sure you're using the right tools when you're breaking those hardlines free from slaves and masters.

[roel03]

I have no dampener. I never put it on. New master to come when I get my next day off. The WRX will be the DD until then.