i just bought a 1989 chevy today...it runs alittle choppy. i replaced the fuel filter the o2 sensor and its still running like crap. when i get it goin i will get out on the road and put my foot into it and it feels like its flooded and it almost goes no where then after i do that and go to a stop it will die most of the time. it had a crate 350 in it but i dont know to much bout it i just got it today. help me out.