View Single Post
      12-13-2013, 01:16 AM   #13
roadsta
Private
Australia
6
Rep
52
Posts

Drives: 2012 650i
Join Date: Oct 2011
Location: Australia

iTrader: (0)

Quote:
Originally Posted by wzj519 View Post
thanks for reply. Is low idle making the vibration? why it is not an issue for my past other L6 engines?
Yes, if the engine idles too low, it will feel a bit rough. Maybe they did this to save a fraction of fuel on the city cycle numbers.

I cannot comment on why 6 cylinders do not do it - but I suspect they idle well above 500 rpm, as I recall from my old 335i.

R.
__________________
650i Coupe
Appreciate 0