I have bled the brake lines 3 times using the sequence set out here in the archives.

No bubbles, all the golden honey fluid is out, clear is running sweet.

I set a stop block on the brake pedal arm, to prevent the M/C piston from running too far in the M/C cylinder, thius stripping out the o-ring.

BUT - When I have all the drain nipples closed - therefore the system is closed, and I step on the pedal (with the stop block off), the pedal seems softer, and I can see throught he reservoir that the rear part of the reservoir is being disturbed, like fluid is being squirted back up from the M/C cylinder.

I ahve started the engine to have teh brake assist on, and with the engine off - no assist.
By the way, when the engine is running, the brake malfunction light does NOT come on (it did prior to the 2nd and 3rd bleeding sequences).

Is the cylinder Kaput after all??

Or is this normal.

Thanks in advance for your advice.