The ABS should not cause this problem. I have a friend with a '92 model 190E and he said he had to turn his caliper over with the bleed screw on the bottom to get it to bleed properly. His theory was that air can get trapped in the top part of the caliper with the bleed screw on the bottom (when mounted). I was not there to witness it but when he was at the house with it we never got a good flow of fluid out when the calipers were mounted (and the bleed screw was at the bottom). I'm still scratching my head over that one.

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Jim