Hi New to 4 strokes rode raced 2 strokes for years. Have 2009. Klx250s- rode it other day fine no issues. Started it today. Stalls every time. I rev past quarter throttle about 10 times. Let it warm up for 10 minutes. Still did it. Pulled side cover. Has a red blinking paray-cdi box. Is that factory? Nothing loose or corroded on bike. Any suggestions would be great and it's carburated