Hi Helpful chaps, am reading a lot of confusing information re the above, basically my 3.0 V6 CDTI has a judder when accelerating, like its not fueling properly, there are NO warning lights on on the dash, and I change my fuel filter every 5k or so. Its fine on idle btw.

Any ideas as to a starting point as to where to see the problem may lay?

Thanks in advance.