This issue didn't occur until today. Three days prior I had run it and ridden it then shut it down normally and put it away. Also, the whole time I rode it there was no noise or issue starting, riding it, nothing. Now it won't start. The oil is full and clean The noise seems to be audible twice per rotation Charging system works Compression sounds normal aside from clicking I left it in gear and pushed it forward and there was plenty of the usual resistance from compression Has anyone ever had a random noise come up and go away or am I going to have to tear this engine down? Thanks in advance for advice and input.