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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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