cam ticking persists after valve adjustment!

I’m having some problems

tick, tick, tick chattering is coming from my engine
its not the injectors I’m sure of that
I took the valve cover off and discovered a couple loose bolts on the exhaust valves.
I did a full valve adjustment and put the cover back on.
but they are still chattering! :frowning: put some injector cleaner in too

any advice?

its a b18a with colt cams and cam gears