Brake fluid leak

[QuickSilver 0]

Hello everybody, I have a brake fluid leak, (yes there is no need to point out to me that brakes are a crucial part of the car, I understand they involve stopping the vehicle, and I know they are important for safety)

I know this much, it's coming from the booster/master cylinder area. (The brake fluid underneath gives it away)

Tomorrow I investigate, but before I do, I was just curious if there are any common areas for a master cylinder/line/booster to fail, as I'd like to minimize the time to find it.

Any info would be great,

E30 -327i (facelift motor)

NON Abs.

[*Glenn* 854]

Resleeve & rekit master cylinder or fit a new master cylinder. There is no fluid in the booster. If its leaking down the front of the booster, its coming from the master cylinder.