You need to check closely the brake fluid and determine if it slowly going down. I suspect a small leak is a line or a slave cylinder of which you will have 4. Look around and see what is going on with the brake lines. Then as a last resort, you have been sold a defective master cylinder. I might add though that the mechanic that replaced the master may not have done a thorough job of bleeding. I would look at all of these. Good luck!
Monday, December 11th, 2006 AT 8:07 PM