my 300 kq will idol fine but when u give it fuel it loses fire and dies down.

 

need more info. has it been running fine? just do anything different? is it ok in neutral? does it matter if you slowly give it gas or punch it, does it act the same both ways? try it with airbox lid off and try it with it on and some rags wrapped around the filter. may just need the carb cleaned

 

i changed the ign coil checked the cdi. it will idol fine but when u give it full it loses spark. when i changed the coil. i put the bare wire to the sparkplug . it wouldget good spark idoling but when you give it fuel it get weak spark. any help would be appeated thank you.

 

Well, I seriously doubt you have a spark problem. Either youre sucking in too much air or too much gas when you give it gas. Give some history as what led up to ur problems