Bleeding the clutch system
 

I am working on a 1987 944 and I just replaced the clutch master cylinder.
I am trying to bleed the clutch system from the slave cylinder now but there seems to be no pressure in the master cylinder. As soon as I touch the clutch pedal it sinks to the floor and will only come up if I pull it back. Is there something I'm doing wrong? I've been trying to pump the clutch but there is still no pressure in the clutch.

You still have air in the line. If you can get hold of a Motive pressure bleeder (about $45) the task becomes a one man job and works flawlessly. Other than that follow the instructions in Clarks Garage for bleeding manually and you should be fine.

http://clarks-garage.com/shop-manual/clutch-02.htm

Don't know what Clark says. Sometimes pressure & vacuum bleeders don't get all of the air in clutches because of a high spot in the slave cylinder.

I think you need to bleed the master cylinder first. Tighten everything, fill the resevoir & put it to the floor. Loosen the master cyl fitting & let air out while the pedal is down. Tighten & do until no air & go to slave cylinder.

To me it seems like 1 or 2 strokes works better with clutches than pumping. The most important things are keeping fluid in theresevoir & patience.

Drew - Your kind of wrong here, there is no way to bleed the clutch master, only the slave.

No suggestions for you if your doing it by hand. I suggest getting a motive bleeder and doing it that way. Follow the steps on clarks and make sure the back end is up higher then the front.

definitely get the motive

+ 1 on getting the motive. Fill the system with fluid, remove the slave, and depress the rod completely. Then re-install the slave, connect the motive, bleed the system and you should be ready to go.

It can be done with a Mityvac, i have done it, but the motive makes it much easier.

Whatever you do though, dont try to bleed it without the slave fully connected & bolted down.

You will blow the seal out if you dont.

True dat. The piston over-travels and scars the seal if it doesn't blow it out completely. Most 944 slave units are rebuilt and normally have some pitting past the normal piston travel area. Even a new slave will fail if disconnected with full pedal during bleeding. For the price of the Motive bleeder I have used and loaned it out so many times I lost count.

+another 1 for the motive power bleeder, one of the best tools i ever bought.

What is it with all of the necro-posts lately?

This one is from 2008!