No oil pressure every now and then

[yowiie]

Need a little of wisdom from you guys
Thing is the check oil light comes on in Vy Calais LS1
I have installed oil pressure gauge and every now and then it has 0 oil pressure on the gauge as well as check oil light comes on at same time
Just wondering if anyone else has had the same problem
It’s doesn’t show up very often but it does happen, ess thinking it maybe the relief valve or spring

 

[krusing]

Oil pump,
and/or oil pickup.

 

[yowiie]

It’s odd
Only shows zero pressure on startup, a little rev and it’s all good

 

[krusing]

Oil pump Maybe damaged/blocked,
What’s the internals look like ?,
Clean or Clagged?

 

[yowiie]

I have had the motor apart to check and internals
Oils clean as

 

[B-Man]

does yours come on when driving or only when starting?
my issue comes on intermitantly under acceleration. sometimes it wont do it for a few weeks other times it does it the next day.

 

[yowiie]

Mainly on low revs when waiting at lights, I have no idea, don’t drivevthe car much but need to get it attended to