ok so i have a 92 250 ninja 28,000 miles. I was riding down the road behind my friend and i was in 4th gear and gunned it and passed him and shifted to 5th and then 6th , got up to around 100mph and then slowed and cruised at about 75mph, suddenly i felt my bike start to slow down and i noticed it shut off. I pulled over and tried to start it, NOTHING... just turned over.. after a few minutes of trying and it finally fired off with the choke fully open and the throttle all the way open.. but backfired a few times and then would rev really slowly upward. i could get it to rev up to 10k or more but it would be REALLY slow to respond... i drove it back home and it had ALMOST NO POWER... i couldnt go past 50mph with full throttle ... NOTE: the bike did NOT overheat. checked the water and checked the oil. GOOD...... but i was kinda thinkin maybe a bad spark plug wire or clogged carb or something.. but honestly i have NO IDEA..... PLEASE HELP ME!!!!