I will reclean it today , debolt it all againe , see if it actually works and if it is stuck or not. What substance do I apply on the calipers ??


The rest is greased as the bike is in pretty good shape m, no rust no bad road conditions like offroad and in general no rust. the spongy brakes I don4t know how it wont get solved.



I pump up the brake , push the lever and hold it tight , open the outlet valve air comes out and fluid but a lot of air and almost no fluid , then I quickly close the valve again and loosen the brake lever after that , more and more air gets in to the bike as I do it , I also notice that the vacuum pump with hose is sucking in air past the valve because it doesn't shut off 100 procent , I think this sucks in air into the system then .. Veery strange for such a simple job ... In the meantime I always open the top reservoir to let in and out of air on the top ...


any tips or how to video would be nice because I watched on youtube but don't get the sponginess out even not with the vacuum set ...