Clio 172

Hi there I just forked out money to get my clios dephaser and belts done. This rattle has appeared at 4000rpm and this little spring fell off when pulling into the drive. I am not mechanically minded, gutted after a stinger of a car bill!! Any help or suggestions would be much appreciated thanks.uploadfromtaptalk1446386213399.jpg
 
Thanks a lot guys! Gonna phone the garage tomorrow. Do you think that would explain the rattle? Also would that put the coolant light on?
 
[MENTION=53754]struan1112[/MENTION], this went on my 172 Cup when I had it, it developed a rattle at around 4k as you say. Exhaust fitting kit resolved the issue.

It didn't put the coolant light on though.