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In Reply to: 2 on the block, 1 on the rad posted by Henkka 750i on January 13, 2002 at 10:40:49:
The early pumps had a bleeding screw but the new version is automatically bleeding type, there's a small hose (tube?) leading from the top left of the radiator via a t-part to both the top of the pump and the container where you fill coolant.
If the small hose is blocked, it won't bleed.
I cleaned the pipe on mine with compressed air before installing the new components.
If you indeed have a bleeding screw (old pump) then it's on top of the pump facing towards the front of the car. Check if there's the little hose first bacause in that case there will be no screw.
Hope this helps,
Henkka