Ok Guys, I have a 04 6spd and I know I read this somewhere else on this forum but can't find. Something about a sound that sounds like a bird or frog under the hood.. anyway. When I turn on my car and while it idling it makes a weird creaking noise BUT if I press the clutch in the sound goes away.. then if I release the sound comes back again

any ideas? I can take a video if you needed