I have Tektro HD-M276 Hydraulic Brakes that were recently spongy (front brake).
After bleeding the system and topping the fluid off, the bite was much firmer, but when I test rode it, the braking power was still extremely weak.
The pads were relatively new, but I sanded the top layer in case there was glazing. I also cleaned off the rotor, but none of this changed the braking power.
When I tried to get a little more air out of the tube, I noticed that the handle would suddenly become spongy when I turned/tipped the handlebars different directions.
Does anyone know what's going on and how I can fix all of this?