UPDATED WITH VIDEO - Diagnose this engine whine noise?

[jmw_m3]

Originally Posted by maestrodevil

Guys, I'm having the same issue since yesterday and troubled to see that many have this issue but it isn't clearly diagnosed what's causing this. Anybody found the exact cause that might fix this? I'd like to avoid spending $hundreds$ trying to replace all pulleys and belts since some have confirmed it wasn't the problem. Mine is exactly like the video attached by fancybmw.

fancybmw what fixed your issue?

Alistair83; and dry87 yours??

Thanks!!

Hey, did you ever figure this out?

[maestrodevil]

Originally Posted by jmw_m3

Hey, did you ever figure this out?

Nope... nothing yet. 😐

[TechE]

I can't confirm but I've been researching this topic for a long time now. I've seen many posts where people replace all their pulleys and belt with no change for this exact noise. It's super common and even shows on low mile cars, but varies with intensity. I'm led to believe it's the lash for the oil scavenging pump. There's another thread somewhere with a guy who worked with his dealer to get his pump and chain replaced which had a direct effect.

Video example. Guy has his belt off, isolating any potential noise from that group.