James...as far as the idle going up wit hthe cap off....
that's to be expected. I'm assuming you have a breather pipe
from the rocker cover to the carbs? Removing the cap
lets the carbs pull in more air so it's like opening the carb
butterflies up just a tiny bit. This is normal.
If the car starts idling much below 900, the oil pressure
starts dropping rather quickly. On my GT6, I can easily make it
idle as low as 450 rpm. At that speed, a 'hot' idle, my pressure
gauge is barely registering. At 850 it'll barely maintain 20psi.
At 900-1000, it'll stay above 25psi no problem.
Did you bleed the air out of the gauge line?
Paul Tegler
ptegler@cablespeed.com
www.teglerizer.com
----- Original Message -----
From: "James Carruthers" <j.carruthers@rave.ac.uk>
To: "'SpitfireMailList'" <spitfires@autox.team.net>
Sent: Monday, May 17, 2004 7:20 AM
Subject: dead or just tired engine?
> Was out driving my car today - I installed my new oil pressure gauge a
> couple of days ago - and it read about 40psi on idle - and went up to
> just over 60psi when hot and giving it some welly...
>
> But today - it started going down - in the end idle was giving no
> pressure - and the most it was giving me was 25psi!
>
> I also noticed that the engine revs leapt up when I took the oil filler
> cap off... something is up methinks!
>
> I also have a weeping front oil seal too...
>
>
>
> James
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