Oil pressure drop to 60psi normally 75 psi above 3000 rpm, but idle at 25 psi@830 rpm fine.. no oil leak.
My question is.. oil pump or bearing going bad?

 

Did you recently change your oil?

If so did you use the same weight?

 

Nope.
oil change every 3000-4000km. Mobil 1 15-50
It happen after autocrossing.

 

Did you install a different type of filter? Different filters have different effects on oil pressure. . . . Could be the brand you used changed their design.

You have always used the same weight of oil correct?

What type of gauge are you using?

 

Do you notice it drops all the time or when its hot outside only? I used to have a 60's Chevy and when you would pull up to a light the pressure would drop down to 0, then when you started driving it would come back up to normal. This was partly because of the hot weather in TX and the car and engine being old. Since you are running a heavy weight oil already I would suspect something else in the lubrication system. That is just MO.

Thanks, J

 

Not because of weather or oil or filter.
No drop because hot weather, idle.....
only it 7-10 psi less than before after 3000rpm..
.. Thank you anyways!.



[Modified by brainwo, 8:41 PM 8/7/2002]

 

1) What type of gauge are you using?

2) If it's electric, fill us in on how you wired it. . . .


This last one's just a guess. . . .
3) Does this occur when above 3,000 RPM when under load AND when in neutral?