I have a 740 (non-turbo) with ~143k on the odometer. It runs really nice, but is exhausting this smoke. It is barely perceptable at idle and just driving easily down the road. When it is accellerated hard it is very obvious. In the old days I would be looking for choke settings/adjustments. Now with everything fuel injected and computer controlled I am thinking sensors or ECM related. Can anybody help me diagnose this problem. It has stumped my local mechanics (admittedly not Volvo experts) to date.
Thanks in advance,
Kirk