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I can't imagine how, but you never know. I have plenty of oil in the pan.
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From: Rotary motors in aircraft [flyrotary@lancaironline.net] on behalf of Bobby J. Hughes [bhughes@qnsi.net]
Sent: Monday, August 27, 2012 8:31 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Oil pressure again
Any chance your oil pickup tube is sucking air?
Bobby
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Mark Steitle
Sent: Monday, August 27, 2012 8:19 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Oil pressure again
Chris,
I agree, it sounds most likely to be the front cover o-ring. But don't
overlook the woodruff key in the oil pump. It is very easy to have this
key fall out of place when installing the oil pump pulley.
If it falls out it will allow the pulley to slip on the pump shaft
resulting in low oil pressure... and eventual engine failure. You can
check that it is in place with a piece of safety wire.
Mark S.
On 8/26/12, Chris Barber <cbarber@texasattorney.net> wrote:
> My oil pressure has dropped again. I am jumping to the conclusion it
> is that pesky front cover O-ring. I know I was meticulous with
> installing it last time. While it may be something else, I doubt it. I
> had the pressure valve fall into the pan a couple of years ago and it
is now safety wired in.
> Perhaps it is the oil pump but it seems so simple and not prone to
failure.
>
>
> So, to make this more than a vent, as I know mostly how to address
> this....contrary to the evidence that I am having to screw with it
> again, is there any words of wisdom y'all would care to share. Since I
> will at least have the front cover off (should be able to do do with
> engine on the plane) would this be a good time to replace the oil
> pump. It has not been replaced in the past do it is many years old
> with an unknown number of miles. Is there a "better" oil pump out
> there than the turbo version offered by Mazdatrix that I should
ponder?
>
> I may have the oil ring and plastic retaining ring already if I can
> find them. Just gotta find the time to crack into it. Then to
> continue my turbo diagnosis. Great power without intercooler (even
> though I found no restriction, but it is a super cheap intercooler
> from eBay) and blow off valve or even N/A. Obvious limited breathing
> with the cheap intercooler and blow off valve
>
> TIA.
>
> Chris Barber
> Houston
>
> Sent from my iPhone 4
> --
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