the dpf on my 07 19d multijet packed up a short while ago,a mechanic cut out the centre of the dpf and blanked the egr to give me time to get money together for the dpf,the car runs great but the engine management light wont go off,there is a strong parrafin like smell especially when reversing,i bought a new egr valve but the fumes are still coming and the management light is still on,will a new dpf stop the fumes ?