I was pressure bleeding my new master cylinder that I installed and I had an issue.. I bought a pressure bleeder and I hooked it up, pumped it a few times, and didn't see any pressure build up on the gauge. So i pumped some more and still no pressure on the gauge. I'm wondering what the hell is going on, then all of a sudden brake fluid starts coming out of the reservoir level sensors and the gromits that hold the reservoir to the master. Apparently there was pressure seeing as I was able to release the air from the tank using the relief valve. Have I damaged the master and should I replace it again? I've read you shouldn't exceed 20psi and I may have exceeded this but unsure seeing as the gauge is apparently not working... I have a1985 w123 300d.