On Tue, 14 Mar 1995, John M. Trindle wrote:
> I have the exact same problem with my B... 30 seconds or so before oil
> pressure starts moving up when cold. I just finished a rebuild.
>
> My theories so far are 1) You need a valve in the oil filter to prevent
> all the oil from draining back when sitting overnight... in other words,
> it takes time to fill the filter and lines before you see oil pressure.
> 2) there may be some air in the oil sensor line from the rebuild.
It doesn't matter whether there is air in the line or not, since it is a
pressure that is being transmitted to the gauge, my mini always has air
in the gauge, but comes on straight away.
Giles
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