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Old 05-24-2019, 10:17 PM   #6
e30austin's Avatar
Join Date: Sep 2010
Location: Portland, Oregon
Posts: 14,549
Remove the slave cylinder and depress the pin of the slave (using the bell housing as leverage) about 20 times or until it starts to have build some pressure. If there is any air inside there, it will all be pushed to the top.

If that doesn't work, your new master or slave cylinder likely has an internal leak. Just went through this with a brand new Febi unit a couple weeks ago.
Autobahn Motorsport - Portland, Oregon
'88 M5 | '88 535i | '88 325i | '88 325is | '88 330is | '91 325is | '91 M-Technic 325ic | '93 740il | '03 530i

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