Dave
I had oil pressure swings at one time, for no apparent reason, while in flight,
and
also on the ground. However the swings were in the normal temperatures here in
Fl.
which is in the mid 90's most of the time.
I replaced the oil pressure sender, which solved my problem.
Jim Brown
DJA727@aol.com wrote:
>
> The weather has recently turned from summer to winter here (in about 12
> hours!). I have made two starts and flights during the cold weather and
> noticed
a
> strange oil pressure reading. At start, the oil pressure comes up normally to
> about 60. Then, in the first 3 to 4 minutes, it slowly decreases -- in one
> case
> to about 20 and in the other case to about 38. The 20 case was colder weather
> than the 38. When I am about to turn around and taxi back in, the oil
> pressure starts to rise and in about 30 seconds it returns to the normal 55 to
60
> psi.
>
> After the first time, I let the engine cool after flight to about 100 degrees
> F oil temp and did a restart. In that case, the oil pressure comes up to
> normal 55 to 60 and just stays there.
>
> I am not sure if this is something that has been going on all along and I
> just noticed it, or a new problem or even a problem at all. It seems to be
> temperature related and acts like a sticking or a slow oil pressure control
> valve.
>
> Does anybody have any experience with this sort of thing?
>
> Thanks,
>
> Dave
> A227
> Mini U2
>
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