Re: oil pressure fluctuations

["David Kirk" <david@domain.elided>]

Dear Brian,

I am no expert, but suffer from lower than normal oil presuure myself (well
my Stag I mean).

I had heard that if the OP dropped under load, it might be caused by the
force of the engine pushing hard against it's bearings would increase the
clearances and therefore allow the oil to flow much easier. So in conclusion
it could be used as an indicator of a worn engine!.

Although I have poor hot oil pressure, especially at low revs (10-15psi) I
have tried this test myself and noted no significant drop in pressure under
load so I am just plodding on and hoping it all keeps together.

As for dropping oil pressure going up hill. Could it be the same situation?.
Going up hill does require a little more effort from the engine to lug the
1.4t up the slope!

David Kirk


-----Original Message-----
From: Brian A.Tink <batink@domain.elided>
To: stag@domain.elided <stag@domain.elided>
Date: 13 November 1998 21:44
Subject: oil pressure fluctuations


>greetings from canberra.
>
>I may have raised this subject sometime ago but I cannot remember any
responses etc, so here goes again.
>
>Basically the problem is that my oil pressure guage fluctuates over a range
of approx. 5 to 7 psi, depending on certain conditions, that is,
>
>the oil pressure changes depending on whether I am  going up or down hill
and/or accelerating or have the foot off the load pedal.
>
>1)  on a level road, if I accelerate the pressure drops, if I take the foot
off the pressure raises.
>
>2)  if I am going up hill the pressure drops and down hill the pressure
rises.  This occurs even if I still have the right foot down
>
>these changes also happen at a constant RPH.
>
>while I concede that ooil may flow back into the sump better going
downhill, I have a problem with this theory on the level road.
>
>My only clear thoughts at the moment is that it has something to do with
the chain tensioners.  I do not know the history of this engine, it was
suppose to have been rebuilt probably about 35,000 miles back but who knows
whether the tensioners were replaced.
>
>any ideas would be greatfully appreciated.
>
>in the meantime keep staggering
>
>brian
>
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