This is driving me crazy... Im trying to do the "simple" thing - bleed my brakes on my -93 155 q4 with ABS. The system had been empty for a couple of years.
I have tried to vacuum suck the fluid, from the caliper, and it doesent work. Now I have the system under presure from the brakefluidreservoar. Nope. Not a single dropp of fluid is going anywere... The clutchsystem was simple to bleed this way. The brakepedal is moving, Ive tried to bleed this way to... It sims that the system is blockt some how. The workmanual isnt much help...