i have a 91 accord and my sports light it stuck on and my car runs rough. the idle goes a little lower than where it is supposed to be and it just runs rough, the car like stutters or hesitates when i try to accelerate until i get to about 30 mph. also when i start my car up in the morning after being cold, it lets out a large amount of smoke then when the car warms up you dont see anything. the smoke comes out until it is warmed up. is that normal or is something wrong. please help me with these problems. any help will be appreciated.