I got my 2006 x5 diesel serviced about 6 weeks ago, the day after i got it back it lost power and started to smoke alot. It turned out that the air filter got snapped being put in and was blocking the air flow. I got that sorted but since then it can't get enough diesel, all filters were changed in the service. I also changed the battery and twice since that smoke started to come out of the passenger side of the jeep, under the front door. Any help would be much appreciated