[Roadsters] Dropping Oil Pressure at idle

[Dan Kroninger]

THe gauge in my car always drops out at idle.  Usually to about 1/4 on the
gauge, but the car never runs rough when this happens.  I was under the
impression that the drop was fine as the engine is not running as fast,
naturally it would drop out.


> Date: Tue, 27 Jul 2010 13:08:54 -0700
> From: hoonhkim at gmail.com
> To: datsun-roadsters at autox.team.net
> Subject: [Roadsters] Dropping Oil Pressure at idle
>
> Just when things are starting to come together, something else shows up.
> Such is the nature of our cars.
>
> After successfully (I hope), swapping out for a new larger alternator, I've
> noticed that my oil pressure is now dropping when I'm at idle. This is
> happening after the engine is warm. When I rev the engine or when I'm
> travelling, the pressure returns to normal. I'm pretty sure it is not my
oil
> gauge since I let it drop until the engine stalled on me. I didn't notice
> any knocking, just as the oil pressure drops, the engine gets rougher. I
did
> also recently replace the oil filter, but haven't changed the oil. Any
ideas
> on what it could be?
>
> Is my engine wearing down (I hope not)?
> Do I need a new oil pressure sending unit?
> Do I need a new oil pump?
> Do I need to add more oil or a heavier weight (don't think so)?
>
> Thanks all.
>
> Hoon
> Early '67 1600
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