I have a weird sound coming from my engine bay that I can't pinpoint. It isn't lifter tick, and I haven't been able to find any videos that replicate the exact sound I am getting. The closest sounds I have found are timing chain related. My car has 90,500 miles on it, and as far as I know, has the original timing chain. Considering the issues these cars have had, I am starting to wonder if it is the timing chain. On initial start up, the buzzing is very loud and then subsides to a more consistent buzzing that follows the RPM of the motor. Once the motor is warm, the buzzing ceases completely. The colder the weather, the worse the noise until the motor is warm. On a side note, I changed the valve cover gasket and looked at the chain, it didn't seem like it was loose at all. I will post a video as soon as I can.

 

I think I know what's making the sound. Here it is: