Hi, my 2002 2.0 litre Focus has a rattling sound from under the bonnet which is apparent with the clutch pedal released, but not when depressed. I have an idea of what this could be but wondered if anyone had any ideas from this sound clip.. (Sorry that the clip is quiet)

[url="http://dl.dropbox.com/u/10706210/noise.amr"]noise.amr[/url]

Thanks in advance!

A failing clutch release bearing is known to make a noise with the pedal out.