dickson

hi all sp riders, recently i faced some problems with my sp, is like whenever i go up gear 3 and abve, my engine will die off, and if from gear 4or 5 kick down to lower gear, engine will die off again. den i try to kick start again, but is sometimes can start e bike sometimes cant start. and whenever i start my bike and let it warm up, my rpm will increase from 1.1 to 4 and e engine will die off. i try to kick start again but to no avail. any kind souls can help whats e real problem with my sp ?