I've been watching for somebody knowledgeable to reply, because I wonder about this too. I just rebuilt my master cylinder - original 1949 single piston - and it also shoots fluid up when you press the brake pedal. My brakes work fine, so I'm assuming it's normal. My cap has a cupped bottom, which would cause the upward fluid flow to be reversed and shot back down. Sorry I don't have a picture handy.


Greg Brown