soft pedel clutch wont dissengage

[Sweetridez]

Hey guys here is the story i have a 95 GST. I'm trying to bleed my clucth but i cant build any pressure. I changed the master and slave sylinders and still cant get pressure.I see the slave push rod is pushing the fork on the tranny but its not enough. I checked for leaks but its not leaking from nowhere new clucth and slave sylinder the tranny for is on the middle so no worn pivots. What could be the problem that i have no pressure?

 

[tronno]

ok,i just got finished putting my clutch in.i bleed the clutch but the pedel pressure is really soft,barly any pressure.i tried to put it in gear with the car running but the clutch wont dissengage.i had my friend press in the clutch while i look at the slave cylinder,the rod is extending.it seems like the clutch isnt being pressed down far enough.should i get a extension rod for the slave cylinder?i dont know whats wrong

 

[Mikelb]

Are you completely sure that there is no air in the system. Even a little bit of air will cause a loss of pressure in the clutch. The air compresses, but the fluid doesn't.

Did you torque the bolts on the pressure plate correctly? If these aren't affixed to the proper torque, then the pressure plate will have too much movement and not provide enough pressure to fully release the clutch.

Are your master/slave cylinders leaking? If either are leaking, the fluid won't be able to build pressure, because it will run out of the leaking areas rather than provide resistance.




Have you adjusted the clutch pedal? http://www.vfaq.com/mods/wayback/clutch_adj.html

 

[xyexz]

I would check your master cylinder, if it's leaking you'll know it because the fluid will be around the firewall.
This was the case for my car when my clutch pedal wouldn't work, if you need to move the car you need to have the car turned off and then put it in gear and start the car.
It'll chug and then get going, this isn't recommended for doing it on the street or for long distances of driving.

Hope this helps ya.

 

[adiffrentcity]

He said that the slave cylinder was working properly, so assuming that he had help and there isn't any air in the line, he must have another problem.

#1 Is the arm that the slave cylinder rod pushes against moving? If not you have air and need to bleed the cylinder again. This is a two-man job!

#2 There is a right and wrong way to install a throwout bearing. Look at the paperwork that hopefully came with your clutch and make sure it in there the right way. If not you may not get fully disengaged.

#3 Like posted above you must have enough torque on pressure plate bolts.

#4 You should have some adjustment on your clutch pedal. Check and see if there is any, you never know. It may be all you need

 

[2GeNTSi]

Wait, so are you just trying to pump the pedal initially to start the bleeding process? If this is the case, you're going to have to pump it by hand (it's not going to come back up by itself) a few times, and then bleed the air out, and repeat it until you start building pressure and the pedal starts returning on it's own.

If you replaced both the master and slave cylinder, than you're gonna have a lot of air in the system, thus the lack of pedal pressure right now.

 

[Sweetridez]

Yeah i pick the pedal up b ut regardless how many times I pump it up and bleed it it either get little or no pressure at all. Its just weird it almost like is getting air in the system from somewhere else but i looked and couldnt see any leaks from nowhere.

 

[No_Skillz]

Explain your bleeding process in detail.

 

[tronno]

He said that the slave cylinder was working properly, so assuming that he had help and there isn't any air in the line, he must have another problem.

#1 Is the arm that the slave cylinder rod pushes against moving? If not you have air and need to bleed the cylinder again. This is a two-man job!

#2 There is a right and wrong way to install a throwout bearing. Look at the paperwork that hopefully came with your clutch and make sure it in there the right way. If not you may not get fully disengaged.

#3 Like posted above you must have enough torque on pressure plate bolts.

#4 You should have some adjustment on your clutch pedal. Check and see if there is any, you never know. It may be all you need

Yes it seems that the slave cylinder rod pushes all the way out ,but the pedel pressure is really soft.I might have installed the throwout bearing wrong,I did put the pin in for the tob but it could have not been put on securely and caused the bearing to slip back against the clutch fork.I will find out when i take the tranny back out.Is there anything else i can check before tearing the tranny out again.

 

[siceclipse]

i know what the problem is.


this is what you do.
follow the normal steps to bleed the master cyl:

pump a few times, crack the slave valve and see the fluid come out.
after you are satisfied with this, its time to bleed the slave.

Start by having the bleed valve CLOSED and push the rod back into the slave and hold it there.

NOW have someone start pumping the pedal and you will feel the rod slllllooooowwwwwly coming out.
once it extends all the way do the process of pumping and bleeding like you started off with to bleed/start pushing fluid thru the master.
after you are done it is common (after reading the tech artical "how to bleed your clutch properly") to open the bleed screw and push the slave rod again and watch the fluid come out and tighten the valve again.

repeat the bleed process one more time and be free of ALL air in the lines.