Sorry if I broke a rule posting that here.

Inside my valve cover on my A6 C6 BLB found a piece of metal down on the left side, I attach a photo.

Sorry if I'm not speaking well, English it's not my language.

Thank you in advacne for the answers.

Your English is good 🙂 

Any loose metal in an engine isn't good. What was the reason you decided to take the head off the engine? 

You might need to do further dismantling to make sure there's no further loose metal elsewhere. 

To change the glowplugs and I saw that little piece there. However, the engine sounds and runs well, but I can't take my mind off that metal.

Hi,

Is it part of a rivet?  Not sure what is riveted under the engine cover.

hmmm,

3 minutes ago, JMKC82 said:

Hi,

Is it part of a rivet?  Not sure what is riveted under the engine cover.

hmmm,

It is looking similar to a rivet and I couldn't find where it belongs

1 hour ago, catamai98 said:

It is looking similar to a rivet

I don't think it's a rivet, blow it up to full magnification and you can see it's oval in shape.

 

Definitely not a rivet in my opinion. It couldn't be a top of a head bolt that's been miss shaped?