Sometimes they fail by leaking internally. Being non-compressible, the oil
on the 'wrong' side of the internal diaphragm means it cannot respond to the
engine's oil pressure.
The fix is to drill a small hole on the end of the sensor so the diaphragm
can again move. As long as the diaphragm has not totally failed (ruptured)
it'll not leak - at least not any significant amount.
Now, having said that, the trick is knowing where to drill the small hole to
avoid damaging internal bits. And that tidbit of info eludes me at the
moment...
Eric Russell
Mebane, NC
----- Original Message -----
From: "alfa-digest"
Subject: [alfa] Berlina Oil Pressure Sensor
Has anyone ever cleaned out the oil passage on the oil pressure sensing
unit?
What's involved. Before I replace it, I'd like to see if I can bring it
back
to life.
-West Clark
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