In message <9310251729.26657.0@dsbc.icl.co.uk> Adrian Jefferies writes:
> Hi
>
> After belting down the road for about an hour at about 70mph, I happened
> to glance at the oil pressure guage and saw it drop away from its normally
> healthy +50psi to something less than 20. It didnt get to zero and
> as I did not have far to go I pressed on, fearing the worst.
>
> The following morning I found there was still plenty of oil in the
> sump, and the oil pressure was fine once again. I drove about 90 miles
> that day and the symptoms did not reappear.
>
stuff removed
>
> So - any clues? Why did the oil pressure fall off so dramatically? Can the
> pump wear? Pressure relief valve? Gauze filter?? Help!
>
> The car is running really well too.
>
> Regards, Adrian
> asj@dsbc.icl.co.uk
Adrian,
My first guess is that the pressure spring &/or ball in the oil pressure
relief valve is a bit tired. These are cheap to purchase & you do not
need to open the engine up to replace them.
My second guess is that the clearance in your oil pump may be a bit much. This
is a common cause for low oil pressure when hot.
TeriAnn
TeriAnn Wakeman Any thoughts expressed above are mine
twakeman@apple.com Unless they are worth anything. Then they
LINK: TWAKEMAN become the property of my employer.
408-974-2344 TR3A - TS75519L, MGBGT - GHD4U149572G, 109 - 164000561
|