[Stevie1076]

Hi newbie to site.
I noticed a rattle coming from the passenger side of my 2010 e90 318d on my way home from work yesterday not noticed it before and only seems to do it when I get to around 30 mph and only heard it because I had the window open.
Only had the car 4 months and was supposedly serviced before I picked it up. It does however have 137000 miles on it

[aaronblack]

Make sure it isn't the chain! Watch a couple of videos on YouTube and see if yours sounds the same! Easiest way is to hear it from the passenger wheel arch.

I had similar sounds on my previous 123d and it happened to be broken/stuck swirl flaps which had eventually made a hole near the actuator arm in the manifold!

[Stevie1076]

Thanks will check that as soon as.

[Tambohamilton]

Chains sound like someone shaking a maraca. Easiest to hear between 1500-2000rpm, generally. Though if they're bad they sound horrendous!