ok i have a 96 KDX 200 (2 stroke), recently it has become a real pain in the *** to start when i finally get it started it runs fine but also starts to die when giving it a fist full...i have just put a new plug in it hasnt changed anything and the old plug seemed fine anyways, has plenty of spark, have cleaned the air filter. i dont know what do do, anyone got any ideas or had a similar problem?

 

Check the boots for cracks, and when was the last time this carb has been cleaned and setup? Hard starting with the choke on full? etc? You have owned this bike for how long and are new to this ride?