Re: Oil leak from hydraulic pump... (archive)

I had a hydraulic pump failure in my '92 i, I change the pump, gaskets and also two sensors, problem solved. So yes there are some sensors that have to be changed.

: Hallo everybody.

: I have a 850CS -95. A couple of days ago I notice a "small" leak from my hydraulic pump.
: Lets put this this way, when I was filling the hydralic tank up the oil was streaming out from the pump.
: So I went with my car to my mechanics and thay told me that the pump was broken.
: OK. I called BMW here in Sweden and thay did not have this pump register in their computers!!
: (there was only 7, SEVEN, CSI sold in Sweden totaly)
: Well my mechanics took the pump apart and found gaskets that fitted in other stores. :-).
: The put the pump back and it was working. :-)
: for about 15 minutes :-(.
: Well that did not know wahat to do. Thay called their conections att BMW, BMW check TIS, no advice could be found.
: I know the guy that was repair the pump so I started to talk to him about this pump.
: Conclusion was reached, pump it self do not have any preasure regulation.
: End of day, not realy, I called them at 20.00 and they where still at work workin on some old M3, I asked them if it is ok if i take a look at my car at that time.
: It was ok, so I went there.
: During the travel to my mechanics I relized that if the gaskets where ok the only reason for the leak was over-preasure.
: When I arrived I disconected the rear stearing preasure sensor, and then the pump stoped leaking :-).
: So now we have only two possible malfunctions:
: the preasure sensor or the valve housing.

: Do anybody have any experience of this kind of malfunc?

: /Mikael

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