Hi Guys, after startup once engine up to temperature if I idle at lights etc motor gets noticeably a little lumpy and enginecheck light comes on. If I drive off it will often go out again and run fine. Before i go the bore score route, on research I am being pointed in the direction of the vario cam solenoid breaking down. If I put OBC scanner on it says misfire cylinder 2. Any thoughts or similar experiences? As at the moment it is only occasionally it happens. Thanks, Al