While I agree with everyone about the senders being flakey, there is
another possible cause that should not be overlooked.
Occasionly, the 4 cylinder cars have been known to drop one or two oil
galley plugs in the crankshaft. This will cause a noticeable drop in
oil pressure across the board.
I usually verify that the sender is the culprit by installing a
mechanical gauge temporarily prior to fitting a new sending unit.
Jeff
Sent from my iPhone
On Oct 2, 2009, at 12:49 AM, ira kaufman <[email protected]> wrote:
normal.it seems these oil senders are delicate.they become untrue very
easily.mine has been as you describe for two years now.i have a new
one but
why bother.the test of oil pressure is to connect a mechanical gauge
to where
the oil sender is screwed in.when the car is at running temp. and at
idle it
should register at least 5psi.don't worry buddy it will.
--- On Thu, 10/1/09, Ken Tubman <[email protected]> wrote:
From: Ken Tubman <[email protected]>
Subject: [alfa] 77 spider oil pressure
To: [email protected]
Date: Thursday, October 1, 2009, 10:41 PM
When I start my '77 spider everything is fine and the oil pressure
reading on the gauge is normal: a bit more than half way up when
driving,
about 1/4 of the way up at idle. After driving for a while the
pressure
readings go down. After about 20-30 minutes the pressure reads
noticeably lower. It actually starts to read around zero at idle,
going
up when the revs go up. The engine still runs and feels fine. Any
thoughts?
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