CRF's Only Forums

Wondering if someone can point me in a direction nephew bought a 2010 crf 250 ran for an hour now wont kick over had it running a a couple times with many kicks runs for a minute kick it in gear give it some fuel and I bogs down and dies. Pulled the head off checked the Valves they are all in Spec,? Not sure where to start next though?

Welcome to the site !!

Are you getting any codes at the Map Switch (blinking) ?? , Do you have any history on the bike ?? , like has it sat for months ??? , how was it maintained , etc. ?? , My first guess without knowing what is going on , is going to be the Fuel Pump , which is located in the gas tank at the bottom ...... or a clogged Injector ......... Those would be my first 2 guesses ....... , but your description is a bit vauge , so without having a lot of details , it is hard to diagnose ........