Originally Posted by distincjive25
my 240sx is smoking a lot when im in the first 2 gears. Is there anything I can do to help. I was told that my cat is bad.
well the catilic converter is designed to convert the gas from your engin ! after your car is warmed up then the car should not smoke, if the car smokes the frist time you go thru frist and second gear then its natural but if it smokes every time you go thru the gear then i say you have emission problems, try changing the filters mabey its not getting enough air compaired to gas, being the reason it dont smoke once you get to a certin speed becouse the air is forced in more, if that dont help then give it a tune up and make sure its not over full on oil, oh yeah if the catlic convertor is going bad once its warmed up you should smell something thats reminds you of rotten eggs,mostly when you come to a stop but its probley your air filter being too dirty good luck