In a message dated 11/9/2003 9:20:12 AM Pacific Standard Time, VE3LVO@rac.ca
writes:
> Dave,
> What engine?
> It may be that cold oil slows the output until it reaches the
> heating area and then once through, resumes normal readings. this is true
> for every engine in which Start is not preceded by pre-oil or preheat
> circulation.
> In some engines, (PW wasp on harvard) a cutoff valve shorts the
> radiator until the engine oil shows temp, then it is released to let cold
> oil pass through the engine - IF memory serves.
> Ferg
>
It is the 914 engine. There is a several second delay before the oil pressure
reads, then it looks completely normal, until after a few minutes it heads
down slowly and steadily. I am not really sure what is going on here. I have
never seen an engine do this before. I am tempted to remove the pressure
regulating valve and clean it in case it may somehow sticking.
Dave
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