WE have found that with dual M/C systems the following procedure works.

Bench bleed the master.
Install the master with both ports plugged.
Remove 1 plug and attach the corresponding line. Before trying to bleed the "SYSTEM" have a helper depress the pedal while Loosening said line. Close the line while fluid is still being pushed out of the master.
repeat 2 or 3 times.
Proceed to bleed that side of the system.

Remove the plug from the second port. Repeat above process.

My only explanation on why this seems to work is that the M/C is drawing air back into itself from the lines. DUNNO??? seems to work here wink
The only other process that seems to work is to bench bleed the master, Install it and pressure bleed the system

Hope this helps, brake problems Draw a perfect vacuum ( IE: they su-k) LOL

hope this helps wave

Last edited by TJP; 04/25/15 11:06 PM.