If you've got a cam chain that's rattling, chances are the tensioner is on its way out. Replace your tensioner with a new genuine Audi tensioner and quiet down the cam chain. Make sure to pick up a new valve cover gasket for the service!
If you've got a cam chain that's rattling chances are the tensioner is on its way out. Replace your tensioner with a new OEM tensioner and quiet down the cam chain. Make sure to pickup a new valve cover gasket and tensioner gasket for the service!