Just like to say Hi to all
I am new to the forum but not particularly to the Audi, I had an A4 Avant for 5 years and it never let me down.

Hence the addition to my stable of a fairly tidy low mileage (94k) 1995 A6 2.6 Avant.
Like any addition it has a few gremlins which I will pick through in time but the most concerning is a noise on start up.
If I was to idle it would carry on for about 2 minutes but by pulling away immediately it disappears very quickly never to return until its cold again.
It sounds to me like the back of the engine and a bit like a jet engine sucking air.

The car behaves impeccably all other times and is smooth

Thank you for your input in advance