Help? clutch bleeding

[BimEdwardo]

I'm new to this site. This is usually something simple I just tried to bleed my clutch becouse it was soft. As soon as I loosened the bleeder valve of the slave cylinder it shot out black goop and the clutch pedal went strait to the floor. I figured I would just bleed it and it should be good right? No. I vacuum bleed it from the nip but it's mostly air. I bleed it and bleed it and just bubbles and bubbles. I see no leaks anywhere. Took master cylinder out and it seems like it works. Would this be the slave?

[scooper]

connect the MC again if it has no leaks, and use a pressure bleeder to do it the right way. Fluid shouldn't be black unless it's been in there since the mid 90s...Put new fluid in there, bleed it and evaluate if it's working properly after all the bubbles are out. Could take several cycles of driving to get all the bubbles out.

[jc43089]

Vac bleeder will pull air in around the fitting and it appears like air bubbles are coming from the system but are not. Sounds like you really needed to flush the system if black goop came out.

[MadRomeo]

Vac bleeder will pull air in around the fitting and it appears like air bubbles are coming from the system but are not. Sounds like you really needed to flush the system if black goop came out.

^^^^^
Our clutches are a PITA to bleed, but the best way to do it is similar to brakes. Get all the old fluid out of the master cylinder, put a small hose over the fitting and try to hold it higher than the slave itself pump up the clutch by hand (might take 30-40 pumps if not more) and open the bleeder. Close it as soon as air/fluid coming out starts to slows down in the hose and repeat until new fluid with no air comes out. Takes about 25 mins for me.

[JDStrickland]

Pressure bleeder works better than a vacuum bleeder. A helper works even better. The black goop tends to indicate contaminated brake fluid.

The brake fluid and the clutch fluid are the same fluid. Have your helper depress the pedal after you open the bleed screw. Your helper has to tell you when the pedal gets to the floor, then hold it until you tell him/her that the screw is closed. They lift and tell you. You open and they depress again and tell you when the pedal gets to the floor, they hold until you close the screw and tell them to lift. Repeat until the fluid comes out clean, and without bubbles.

You probably need to flush the entire system since you observe black goo coming from the clutch slave cylinder.

A pressure bleeder will allow the helper to depress the pedal half way and hold it as you open the bleed screw and wait for the bubbles to stop and the fluid to flow clean.