Any advise on a weird rattling noise?

[skogas]

Hi guys,

I just recently got my hands on 2004 Cube (BZ11) with ~56,000kms on it, everything seems to be fine except for a weird rattling noise, which is very audible when I drive with an open window (i.e. it comes from the outside).

Interestingly enough:

1) Noise only appears when I am pushing on the accelerator (disappears when I release pressure on the pedal)

2) Only audible when car is on the move, i.e. when I rev it up on neutral - engine sounds fine

3) Seems to only be present on certain RPMs, probably something in the range 1700-2000

Have any of you experienced something like that with your Cubes? Should I be worried? Would appreciate any advice.

Thanks