Unbolt the master from the brake booster first and check the back of it, sometimes the seal at the back of the master cyl leak. Also check brake lines and calipers for any leaks. If you do decide to replace the master cyl, you will need a tech 2 to perform an automated bleed to get all the air out of the sys if you don't do this you will never get a brake pedal. Post back with any other questions.
Monday, December 22nd, 2008 AT 4:54 PM