So 12 pent star problem is going on?

I had 'tick' sound since 5000mi.

But i didn't get engine light.

So whatever if i have 'tick' sound , the engine light will show up?

Should i wait till get engine light or just go dealer and request replacement of
Cylinder?

the dealer wont even look at your jeep without it throwing a code. Even after the code, the dealership will have you drive with the tick until the parts come in. It sucks, but nothing that is urgent to get fixed ASAP unless the warranty is about out. I would then at least take it in so there is a record of the problem and them telling you to wait until the code(so hopefully the warranty will still cover it)