hi, i have a 307 1.6 petrol estate. when the car is idle there is a rattling noise coming from under the bonnet. when i press the clutch it goes away & when i release the clutch it comes back. i had a new clutch fitted 2 weeks ago & everything was fine but i've noticed the rattle starting to come back. i've only had the car 4 months and its been in the garage more than its been on my drive. please help!!