During a recent arcing plug wire replacement I noticed the pictured blister on the bottom pipe (but looking from top) of the ABS pump. Can't tell from the picture as I brushed it a little with my finger but the exterior was shard (sp?), like a superhero puncturing metal with a screwdriver from the inside.

As I think about it, symptoms:
-brakes a little soft (but the car is 20 yrs old).
-when light application to a stop, slight hiccup of pressure can be felt in pedal a second or two before stopping, consistently at this point before stopping

But otherwise stops normally.

Anyone ever seen this before? Am I looking at total ABS pump failure and replacement?

TIA
Mike
'93 190E 2.3

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1993 190E 2.3 California

abs light on yet?

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)

No ABS light yet, and I don't think fluid loss yet either but I'll double check asap.

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1993 190E 2.3 California