brake problem.

karl randell
karl randell Posts: 141
edited January 2008 in MTB general
hi
currently i am running an avid 3 on the rear of my bike and i have noticed that there is brake fluid leaking out of the reserviour. it doesn't leak when under pressure when pulling the brake lever. it leaks when the lever is released and the fluid returns. what's wrong? will i be needing a new brake?
thanks.
I havent fallen off, im just having a rest!!!!!!