Hi, i had similar problems with my cossie. The owner before me had Ford and a local so called expert look at the car. He paid out loads of dosh trying to get the car set up well. Everything he tried was money wasted. When i got the car it did not idle well and had a miss fire now and then. I took my car to Stu at Motorsport Developments. He checked my car over and found the problems in about 1/2 an hour. The car now runs fantastic.
I had to traval 180 mile round trip to get someone that new what they where doing. A small price to pay for such good service.
Paul