1986 420 SEL w/ABS

I am trying to bleed brakes using a (one person) power bleeder I bought from Griots; started at the RR wheel and very little BF is coming out. I can even take out the entire nipple and still nothing leaks out. The bleeder sucks out a tiny bit of BF and the MC reservoir remains full. Tried the LR wheel and same result. doesn't help if I pump the brakes.

The bleeder seems to be sucking; it will stick to my finger.

Any ideas what might be happening?

Thanks

__________________
Simon Shearer

1986 420SEL

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