Hi...please can someone help me? Car running perfectly, parked it, when we tried to start on return 'go to dealer message' and only about a 1500 revs possible with some trailing smoke. Car staggered home and problem remains. Please what is likely cause (dirty components?) and can I cure it: if so how! Would be a lengthy run - if it didn't do more harm - to a capable garage, as previously nearby demolished for housing.