So I originally made a video of a sticking tb, and noticed a slight lock when. Get really close to the tb. I cannot hear it outside the video, but I don't have the greatest hearing either. This is after my initial 20 minute warm up for the first start.

Thoughts? Normal engine noise or not.

Le2 lt1 - YouTube

 

I noticed you had the radiator cap off and were using a funnel, is your car over heating? Because mine made a similar noise earlier today when the car was over heating and I was bleeding the system as you were. Otherwise your motor sounds about normal.

 

It was sitting right at 180. I tried to find the sound again today after I did my oil change from my initial start up. I'm not going to lose sleep over it. I could not find the sound again.