Aaron Anderson posted a topic in YZ400F/426F/450F/450FXI have a 2014 yz450f. I have to fully open the throttle and give it a few kicks and then close the throttle and it starts. Is there a reason why I have to do this? It goes through periods when it does this. Im not sure if it has anything to do with changing the oil because the last two times I have changed it, it has done this for a few hours of riding and then it starts normally. Any response is appreciated. Thanks guys!