Slave Cylinder Problems

MA70Snowman

New Member
Oct 17, 2006
374
0
0
San Diego
Okay long story VERY short.

For awhile i've had a VERY slow leak in my clutch (talking months) so every 2-3 months i'd have to re-bleed the clutch. finally got fed up and ordered some "quality" aisin parts from Horsepowerfreaks.com got a master and slave. FINALLY got them.. and got them installed. great, clutch feels better then it ever has. for about a day..was driving around and then all of a sudden went to shift and the pedal hits the floor. managed to power shift my way home (was only maybe 3 blocks from the house) SO today I go look over the system.. and no clutch fluid (i checked the day before when it happened and everything looked good) so i added some fluid pumped the clutch still wouldn't hold pressure so I look under the car and there's a puddle of fluid, it was leaking out of the bell housing and the vent. so i removed the slave cylinder. and the internals had actually PUSHED themselves out of the housing.. WTF. So i pushed the spring and cylinder back into the slave housing. reseated the boot. did a couple test pumps on the clutch and the cylinder kept pushing out past the housing. HU? so pushed it back in. and reinstalled it. from what I could figure the pressure from the plate should've kept it seated enough where it wouldn't push past it. Well re-bled the system and drove great.. made it all the way down to autozone and back (about 10 miles round trip) and a block from my house the pedel hits the floor and sticks. (luckily all this is happening close to the house)

anyone had this problem before? any ideas? just a bad part from HPF?
funny thing is.. its random. i could do some passes w/ quick shifts no problems. do some cruising.. it just goes whenever. and its pissing me off. thanks in advance for any advice.
 

ModularTurbo

MasterPower Rep
May 4, 2008
128
0
0
Homestead, FL
www.modularturbo.com
MA70Snowman;1058002 said:
Okay long story VERY short.

For awhile i've had a VERY slow leak in my clutch (talking months) so every 2-3 months i'd have to re-bleed the clutch. finally got fed up and ordered some "quality" aisin parts from Horsepowerfreaks.com got a master and slave. FINALLY got them.. and got them installed. great, clutch feels better then it ever has. for about a day..was driving around and then all of a sudden went to shift and the pedal hits the floor. managed to power shift my way home (was only maybe 3 blocks from the house) SO today I go look over the system.. and no clutch fluid (i checked the day before when it happened and everything looked good) so i added some fluid pumped the clutch still wouldn't hold pressure so I look under the car and there's a puddle of fluid, it was leaking out of the bell housing and the vent. so i removed the slave cylinder. and the internals had actually PUSHED themselves out of the housing.. WTF. So i pushed the spring and cylinder back into the slave housing. reseated the boot. did a couple test pumps on the clutch and the cylinder kept pushing out past the housing. HU? so pushed it back in. and reinstalled it. from what I could figure the pressure from the plate should've kept it seated enough where it wouldn't push past it. Well re-bled the system and drove great.. made it all the way down to autozone and back (about 10 miles round trip) and a block from my house the pedel hits the floor and sticks. (luckily all this is happening close to the house)

anyone had this problem before? any ideas? just a bad part from HPF?
funny thing is.. its random. i could do some passes w/ quick shifts no problems. do some cruising.. it just goes whenever. and its pissing me off. thanks in advance for any advice.

DSM's have this problem all the time. I would check in side the bell housing since that is where the leak came from the lines might be toast. Or bad parts it happens more than you think...
 

MA70Snowman

New Member
Oct 17, 2006
374
0
0
San Diego
i guess i should have clarified about the leak "inside" the bellhousing
the fluid i saw was from the slave cylinder leaking out the rubber boot, which is inside the bellhousing.
 

ModularTurbo

MasterPower Rep
May 4, 2008
128
0
0
Homestead, FL
www.modularturbo.com
so tell me if I am understanding you right. occasionally the plunger inside the slave cylinder blows out causing leakage and the pedal going dead?

You know what I just thought it might be? it sounds like there is too much pressure going to the slave. Is you clutch pressure plate stock? You might need to run a restrictor if that is the case.
 

MA70Snowman

New Member
Oct 17, 2006
374
0
0
San Diego
gaboonviper85;1058319 said:
that doesnt sound like it at all....

sounds to me like you didnt have your pedal adjusted right with the free play......


wow.. sadly that sounds dead on :( i'll search the TSRM for proper procedure on that. honestly I took the short cut and just matched the length on the new master to the length on the old master. further assuming thats what adjusts the freeplay. If you have any advice on adjusting the freeplay that I won't find in the TSRM please enlighten.. thanks.

and for the other.. yes its a stock clutch assembly.