Why does my 07 CRF150R have a high idle and stall?

A high idle and stalling in your 2007 CRF150R could be caused by a few issues, such as a dirty or malfunctioning carburetor, improperly adjusted throttle or idle settings, or air leaks in the intake system. Ensure the carburetor is clean and the jets are not clogged, as this can affect fuel delivery. Additionally, check the throttle cable for proper adjustment and inspect for any vacuum leaks that might be affecting engine performance. If the problem persists, consider consulting a mechanic for a more thorough diagnosis.