I have as 2022 crf250rx with less than 30 hours that idles rough (sputtering) once it warms up and stalls. It'll ride perfect but once you stop it'll stall. So far this is what i have done and have had no luck;
-New injector
-New spark plug
-New MAP sensor
-New TP sensor
-New ignition coil
-New ECU
-Checked Valve clearance
-Checked fuel pressure (has 50 psi)
-New air filter
-Checked Kill Switch
-Put fresh fuel in it
-New injector
-New spark plug
-New MAP sensor
-New TP sensor
-New ignition coil
-New ECU
-Checked Valve clearance
-Checked fuel pressure (has 50 psi)
-New air filter
-Checked Kill Switch
-Put fresh fuel in it