My Mondeo TDCI zetec turned 100k old 2 weeks ago. Had it serviced and only drove it today after being ill (serviced last saturday)
It is juddering/misfiring around 1800 revs and smoking heavily when you boot it (even when warmed up (100+ motorway miles)
Garage had put an "engine flush" in - will this be causing it? If not, ideas on the back of a postcard please



