Rattle/high idle when starting

[01X5Guy]

Is this all within a 2-3 second period or does it continue to rattle for a longer period of time. Mine will intermittently do that on startup and rattle on a high rev startup. Usually I have a low rev startup with no rattle. Im still trying to figure it out.

[aldo1123]

Yes it only happens for a 2-3 second period and most of the time I do have a normal start up but it happens enough to make me concerned.

[01X5Guy]

Ok cool - I'm along for the ride in this thread. Most feedback here will tell you it's normal and nothing to really worry about. They will mention Vanos knock, change your oil weight, wash and wax with Zaino, etc.. lol But that gives me little comfort and I'm not convinced the knock will not cause damage down the road.

[aldo1123]

So I shouldn't worry about it? My only worry is that it never happened before until about 3 months ago and now it happens daily