Rattling noise from engine bay, Any idea? [VIDEO]

[quentinvidal]

Hello,
i bought a 320i e90 n46 2005 auto trans, this year (i live in Australia), with 120k km.
Lastly i had a rattling noise coming from the engine when i started the car, but it happened only once a week.


I read online that it may be due to a weak timing chain tensioner.
So I replaced it. I also took that opportunity to change VANOS solenoids seals and coolant flush.


However, this did not help, and it got worse. Now the noise can be heard every single time I start the engine. So I have the feeling that it has something to do with the timing chain or guides. Probably needs a timing chain replacement?

Again, i replaced timing chain tensioner and Vanos Soleinoids seals, so it might be the cause.
I also read that maybe i should wait 2 to 3 days for the new timing chain tensioner to be compressed by the oil (as it is currently empty)


I posted a video on YouTube where you can hear that noise.
https://www.youtube.com/watch?v=h1bOkIv8-qA


I also read some topic related to my problem but they did not help me find a final solution.
https://www.bimmerforums.com/forum/showthread.php?2011707-Startup-chain-rattle-even-after-replacing-tensioner/page3
https://www.bimmerforums.com/forum/showthread.php?1532105-new-noise-after-fitting-new-timing-chain-tensioner-video
https://www.bimmerforums.com/forum/showthread.php?508930-Timing-chain-tensioner-replaced-still-making-rattling-sound

What do you guys think?

Thanks!

Quentin

[Cromer]

Any updates, my n42 sounds like a diesel bmw, vanos solenoids connected or not.
Sound comes from close to the vvt motor