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Noticed today on my maiden voyage of the new engine that the oil pressure gauge seems to pulsate quite rapidly +- 2 psi or so. I ran either a -3 or -4 line from the block to the gauge and did not purge it. I have not seen this before and just wanted to verify whether the line needs purged or a restrictor or something to keep the needle from vibrating? It's an Autometer Ultra-Lite mechanical OP gauge.

Idle pressure is around 60 psi and running down the road is around 70 psi but the needle just rapidly vibrates.

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Check the filter BUT you could use a restriction in
the gauge... dont know about the gauge you have but
a .020 restriction can be screwed in the inlet on
different gauges to take that pulse out... 99% of
the time you are compressing air thats in the oil line
(normal) so no need to bleed that line

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Kyle, you worry to much.

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