Oil pressure fluctuating (slightly)

[cadillackid]

Originally Posted by ABBus

Can it be both?
There is a common injection rail, and a high pressure oil pump for the injection too. I don't know the exact terms, so don't take these informations as facts to add to your knowledge ...

Edit: looked at the docs, and it looks very more like HEUI than common rail.

In common rail there is a high pressure fuel injection pump. In HEUI the high pressure fuel is pressurized in the unit injector itself. So there is a high pressure oil pump .

I knew all the 466e and up were HEUI but for some reason I thought they switched around 2010. But I’ve never looked at diagrams to verify

[ABBus]

It is HEUI, then