hi all, I have just bought a is200 sport on a 52 plate, have noticed that when the engine is cold it runs perfect, once it is warm I get a misfire, it has been onto the computer and its cylinder 2, put a new set of plugs in and new coil pack into c2 with same problem, today it has had a compression test and c2 is low giving the misfire reading, I bought it from a dealer and he has offered to give me some cash back and keep the car or give me a full refund, any advice would be greatly appreciated