ok i think i finally found the problem.. the carburator is not the issue for starting as i put spare carb on it that work before. i checked if the engine was even getting spark. it wasn't i checked last time and it was. however heres a question, how do you know if it's the spark plug or the actaul ignition system that is the problem? my eninge is older from the early to mid 90's. is it time to change it out or what?