[Stantheman]

Hi peeps. I had the DPF warning light come on,so after reading up on it the general thing to do is to take it for a run to clear it at about 2,500 rpm. I drove about 45 miles and just near from my house it started to run lumpy like it's in 3 cylinders. The DPF light still shows so I've booked it in tomorrow morning. Would it run lumpy like that or is it something worse. The car is a 120d 2007