I've got a buddy that has an 02 cobra, real sweet car but when it's cold has a real bad bucking problem and boggs itself down when shitfting to the higher gears. I thought it could either be timing or a sparkplug somewhere. I'm not real familiar with the 02 engines so any comments or help would be great. He has done nothing to the car since he bought it. It does have a timing adjuster on it but is marked off to where it's supposed to be. Looks to me if it was the timing it would do it all the time and not just when it was cold.. but i dont know. What do you guys think?