Hi,

my Audi, has what sounds like a noisy exhaust, seems the leak is under the bonnet, and I suspect is between/around the cat and the turbo. Anyone had a similar prob and know how to fix it? I can smell exhaust fumes around that area too..

 

Is your turbo a lot louder since you noticed this? Its sort of common for the weld on thcat flange against the turbo to crack and leak. Havent you taken a look under the hood yet?

 

yea either that or a blown out gasket between the turbo and mani of turbo and cat

 

Mos common is the flex pipe. Get under the car and try to trace the noise.

 

cheers, thanks for reply,

I havent had a good look yet, not always easy to find'the' leak, thought might be a common fault. The turbo actually makes a noise that sounds like there is a police car siren in the background - the audi mechanic who inspected it beforeI purchased said the sound was bit unusual. Could defintely be due to leak around turbo. thanks