Hi,
2 questions which may concern the design of the brake system rather than the testing tool :
1/ Concerning the "why" we have to push so hard to get the green bar : is an air buble a sort of "cushion" which will prevent to reach the researched highest brake oil pressure when the break handle or break pedal are pressed "madly" ?
2/ The procedure indicates (correct me if I am wrong) that at first front pad (if one begins with the front brake) is placed against the disk and then the the handle is pressed strongly. But when pressed firmly at max both front and rear pads are blocked again the disks.
So, if one gets a clean front, but not a clean rear, since both front and rear wheel circuits have been implied, does it mean that the culprit is the rear command circuit and therefore the only one to be bled again ? or the fact that the rear pad was not against the disk at the beginning of the process is against such conclusion ?