Resolved New Slave Bleeding Issues

[breaksdaily]

I found a barn find 96 GSX all original unmolested locally from an old man, the car has sat for so long because he claimed a bad back and could get in it, anyways thing is stock as they come but the clutch pedal would just get stuck on the floor, slave cylinder was literally locked up and would not move, removed it and replaced with new slave and everything tightened back up.

Having issues getting all the air out of the system the pedal just flops and gets stuck to the floor still. I've tried a vavuum pump bleed as well as gravity bleeding with no affect, km getting air bubbles and a very very little amount of fluid into the pump but after attempting to bleed it several different ways for 3 hours I'm still nowhere.

Anyone.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

You must be logged in to view this image or video.

 

[Rich94]

Thing looks clean! Nice steal! I had a similar problem as yours with the clutch issue. I replaced the slave cylinder and everything, turned out to be the clutch master.

 

[breaksdaily]

New master fixed her up!!

 

[JS4G63]

Good deal! So, how many miles on this $1200 DSM?

 

[breaksdaily]

165K, did timing belt job and drove her to work today...

 

[Squirrel82]

The master and slave are very simple devices with very few failure points. I think one or both of your master cylinder internal seals are bad (piston seals, or return valve seal), allowing fluid to go back into the reservoir instead of pressurizing the slave. OEM rebuild kits are $80 and you can do it in 30 minutes. Aftermarket rebuilt units and rebuild kits are half the price of OEM, and the rubber seals usually last accordingly (I've had 3 Autozone master cylinders last under a year in two different cars).

Here are some oversimplified, not-to-scale mspaint quickies:
Master cylinder:
Turn the rod too far in and you block off the fluid return path to the reservoir (in a DSM its a check valve inside the piston, IIRC), thus preventing the clutch from engaging fully.
Turn the rod too far out and you just make excessive gap between the rod and the piston, thus wasting pedal travel and preventing full disengagement.

You must be logged in to view this image or video.

If the external seal(s) were leaking, you'd get pedal feedback and partial clutch movement, but fluid running down the firewall or dripping from the outside rod.


Slave cylinder:
Really the only way it can fail is a leaky piston seal, evidenced by fluid leaking out and partial/no clutch disengagement.

You must be logged in to view this image or video.

So after adjusting the clutch pedal I went out for a test spin,going down the highway the clutch pedal hit the firewall and it wouldnt come back.After coasting to the shoulder and pulling over I realized that the rod in the slave fell out and was leaking Dot3 out of it.I hadnt put the boot on right after playing with it last night.

Judging by the picture is my slave seal bad since liquid came out?