Here goes, chaps:
when I drive at a certain speed, between 40 and 100km/h, if I disengage, I can here a certain taptaptap
noise. This noise can vary it's rhythm depending the speed.
The funny thing is that, when I'm acceleration I can't here anything (and the sound is quite audible). If I disengage, I hear it, with the clutch pedal pressed or not. Even if I drive with a speed engaged, if the engine is not pushing I can hear it.
I can hear it when changing gears.
If I break I can still hear the sound till +- 40km/h. Taptaptap..tap...tap....tap....
What the heck can it be? I'm thinking about something but I would like to have your opinion.
P.S. I don't think it's any exhaust shield because everything is well fixed. It's not a tire because they are new and they are good.
(2011) Alfa Romeo Giulietta 1.6JTDm, Pack Sport 17", Pack Comfort
(2009) Alfa Romeo 159 1.9JTDm 16V QV, 170hp+360nm, Bilstein B4+TI springs, ConnectNav G2, Autodelta Air filter, Brembo Disks, Satin Mirror Caps
(2002/2009) Alfa Romeo 147, 1.6TS QV, Autodelta Remap, Autodelta Air filter, Eibach Pro System Kit
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