I'm pulling my hair out over my brakes! I've fitted mondeo calipers and st170 discs to the front and cossy 2wd rear discs and calipers, all with braided lines and new fluid to my 88 xr3i. Now ive bled the system through about 6 times now and pedal still goes straight to the floor! is there any way i can test if i have air in my master cylinder or if my master cylinder or servo is knackered? The brakes worked fine before and i only removed them to upgrade so im sure its air in the system? HELP! im at the point where i just want to smash the thing to bits!