2006 klx 125 ticking.
Hey everyone. I decided to join here because I just purchased a klx 125cc today and it is ticking in the top of the piston. Before I went ahead and mess with it or ride it I would like to know what's causing it and how to fix it. It sounds like the valves are loose but I was looking online and told it could also be the cam tensioner. The owner told me he rode it one day and it started ticking so he stopped riding it and never messed with it. Is it the valves? I know how go adjust them but don't know the specs. If it's the cam tensioner I need to know how to adjust or replace it
Thanks in advanced.