valve

So I think I have a bad cam follower or lifter or whatever we are calling them these days... Any idea how big of a job this might be? I was thinking of just putting a paint mark on the cam sprockets and chain, removing the tensioner, popping the cams off, rip out the (hopefully obvious) bad...

ima engine noob, learning =] give me some feedback, any other little ideas that will help make this look better [cheap preferably]