Hi Guys,
I have been searching in this forums and can't find anything related to my question. This is my first diesel car and while I was not that excited about the diesel engine rattleing at accelaration, I was sold on the gas economy. Again this diesel noise is only at the start of the acceleration and then it goes away. A few months have passed already and still can't fully get used to the diesel noise and some friends make theri wises comments/jokes..."I think the fedex/ups guy is coming, oh no it your car.."WEV
Surprisingly the 335d is a lot quieter than the X5 diesel, why ? Don't know. Another interesting fact is that in the mornings, the car is very smooth and the diesel noise at acceleration is barely noticeable. Once it warms up the noise its back. This make me to believe that it seems a sensor/ pump or what ever it is, it's closed or not activated.

has anyone figured it out ?
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2011 BMW X5 35d - Titanium Gray/Black Leather PP, SPP, HIFI Radio, Manual Sunshades, Step rails, LED Coronas, Brushed Aluminum Roof Rails, HID Fogs, 22"Hartge Classic II :Front 10.5x22 - 295-30-22 Rear 12x22- 335-25-22