Celica Forums General Discussion Exterior Noises

So I've been getting this little annoying noise at the back of my Celi since I got it and yea the spoiler is loose always manages to get loose have any of you guys experienced with this? If so let me know what you did, or if anybody thinks it's something else in the back comment please thanks!

I was having the same issue of the nuts backing off, i actually lost one in the cavity, but a little lock tight seems to have fixed it.