Just after a bit of advice with regards to my Audi Cabriolet. In the last week or so the car has developed what can be described as a creeking noise when depressing the clutch pedal. The feel of the pedal itself isn't affected and having had the car on the ramp the noise has been diagnosed as coming from inside the engine. There are no visible signs of anything wrong.....any suggestions?? do I need to be concerned??