[Robin427]

Hi,
i'm still searching why the engine does this :

it has a rough idel for a few seconds after starting
but not when it stands for longer than ~ 8h (e.g. at work or overnight) and not when it stands briefly (e.g. shopping)
after 3h-4h it always happens

New are: solenoid valves (BMW), check valves, oil filter cover, CVV, oil (Motul 5W40), eccentric shaft sensor, ignition coils +plugs, software update, LL raise to 700 / min (my idea for a bit more oil pressure )

no error codes
drives normally
except for the rattling at low rpm acceleration what other N52 also have
Consumption probably ok (15% more than my M54 under identical conditions)

I suspect that it could have something to do with the viscosity of the oil after a certain cooling phase ?

any ideas?