Video**Strange metallic type sound just at initial crank

[Fastsoup]

Howdy,

So just trying to get things sorted with the new to me 2009 Audi A3 Sline.

Tonight I noticed an odd metallic type noise just as the engine cranks and it doesn't last. I thought maybe timing chain but I don't think so.

https://www.dropbox.com/s/uxt7t5cwbcubaak/VID_20200921_194848.mp4?dl=0

Anyone know what that could be? Is it a natural characteristic of the motor? It's just a blip and gone.

Fixed the airbag light today, driver side mid range; all due to broken wires between driver door and frame. Engine light comes on periodically code p0171 (rear main is leaking) but engine idles fine and pulls strong.

 

[henkkeumus]

Doesn't sound metallic to me on the video but more like some air slipping in/escaping somewhere. I wouldn't be too worried to be honest.

 

[ab1702]

I’ve not listened to the clip.

what engine is it, petrol or diesel?

 

[Fastsoup]

Doesn't sound metallic to me on the video but more like some air slipping in/escaping somewhere. I wouldn't be too worried to be honest.

I'm too OCD to leave it...

 

[Fastsoup]

I’ve not listened to the clip.

what engine is it, petrol or diesel?

Sorry should have mentioned that...2.0t gas pod.

 

[Fastsoup]

**Solved**

Serpentine belt...replaced it and no more noise on start