Rattling noise between 2500-3000 RPM [Video]

Hello all,

The car has 83k miles and started making a rattling noise between 2500-3000 rpm. In the video you can hear the noise at the 5 and 10 second mark: https://youtu.be/fONtco4me0c

I did some research prior and thought maybe it was an exhaust leak, so I thought a seafoaming would help detect that, but no luck. Next thing is perhaps a valve adjustment?

The car has a new o2 sensor, oil flush and change, new plugs and clean air filter

Any help would be appreciated !

Thanks in advance!

Tough to hear. Heat shield? They start to rot and will rattle...

Hello. Really is hard to say from that clip. Is that smoke coming out of the exhaust pipe or heavy condensation ?