no pressure on clutch pedal...

[DrifterXJDM]

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I have a 91 240sx I replaced my slave because it started leaking until it gave out and I can't go to any gear at all. After I replaced the slave I vacuum bled it and pressure and the pedal goes straight to the floor so I replaced the master I thought probably just a bad master also but I bled it and everything still the same... help anyone is there some special thing I have to do???

[nissandrift]

I'd suggest getting rid of all that weird damper stuff, just bend the hardline.

[robbbby]

you have to bleed the slave as well as the box underneath.

[fatboy]

when you replace the slave, you should replace the master as well. make sure everything is tight and stuff. Then just get a buddy and bleed. This should be a pretty straight forward operation. IT does take a while for the pressure to build up though so be patient.

[robbbby]

Why should the master be replaced when the slave is being changed? Should I replace my brake master cylinder when I change my pads? My car has ALOT of kilometers on it and has had the slave replaced many times but the master still works perfectly.

[gabossie]

No need to replace both unless both are bad. Bleed the system and check for any leaks. You can also get a SS clutch line from SPL to replace the rubber line and bend the hard lines to bypass the dampener, as previously mentioned.

[fatboy]

i go to tech school for automotive and when we replace the slave, we replace the master. my intructor told me you do that because if you have a new master and it is stronger than the slave, it can cause premature failure of the slave. i dont really get it but my instructor has been working on cars a lot longer than i and i bet most of you have so i would definitely trust him. the brake pad, master cylinder analogy was not relevant by the way

[pmkls2]

fatboy is right on the money, although the master is similar to a brake master it still isnt the same and DOES need to be replaced with the slave. Also, the price of a new master averages $20-40 so its not like a big price difference. I have replaced my master, slave, and flex hose all 2 times now and have also removed the dampener a long time ago and still continue to experience problems with the clutch. I think that these systems are a little on the weak side honestly and it probably helps to use OEM parts and not aftermarket as well.