Brake problem: I got a 06 ZX10R can't get the brake pedal to come up, still spongy any suggestions?? I've tried bleeding it the old fashion way already and dont work also tried using the mighty vac and it doesnt work either.
My bike did that last season. Here's what worked for me:
1. unbolt rear caliper
2. hold it up as high as the hose will allow you to.
3. stick a paint stirring stick or anything as thick as the rotor, between the pads so they don't come out too far.
the idea is, air bubbles like to rise naturally. If the caliper is below the master you are trying to fight the bubbles by pushing them down to the bleeder.
By raising the caliper higher your pushing them in their natural direction.