Dave -
Thanks a BUNCH for this. Julian - I hope this helps.
Wayne
----- Original Message -----
From: Dave1massey@cs.com
To: wayne@brazinski.com ; mgb-v8@autox.team.net ; triumphs@autox.team.net
Cc: JulianChas5@aol.com
Sent: Sunday, February 13, 2005 9:59 AM
Subject: Re: TR3 Rover V8 engine problem
In a message dated 2/12/2005 3:06:23 PM Central Standard Time,
wayne@brazinski.com writes:
My new friend Julian told me about a problem he was having with his Rover
V8
engine not producing oil pressure because the oil pump was draining.
Despite
the fact that the email below suggests that the problem goes away if he
starts
the engine weekly, the situation is getting worse.
I've been told that an easy way to prime the pump is to overfill the sump by
a couple of quarts. I have not tried this since I have not had the problem
since - even after letting the car sit for a month or more.
The pump inlet and outlet are on the top of the pump and unless the bottom
plate gasket leaks whatever oil is in there when the engine is shut down
should remain. In theory. However, of there is an air leak at the junction
of the feedpipe (from the oil pickup) to the pump inlet (or rather the port)
in the block that leads to the inlet) then the pump will suck air instead of
oil and once the remaining oil leaves the pump its efficiensy reduces
considerable. That is why once the pump is primed it works fine. When
pumping primarily oil what little bit of air that mixes in is minimal but when
the pump is trying to pump air its capacity is too low to pull any oil from
the sump.
So the two places I would look first is to check for oil leaks at the pump
and then drop the pan and check the oil pickup connection.
A generally recognized poor choice of oil pump design and Rover changed in
later versions of the engine.
Dave
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