Cracked exhaust manifold
So I decided to look for things to fix on my Jeep as does every XJ owner, and to my surprise I found a crack in the exhaust manifold. I'm not really sure if it's a huge deal but could anyone tell me the severity of this? Leave it alone or fix it? I mean I don't really notice anything, I feel a ticking in the valve cover but other than that I don't suspect a thing out of the ordinary. Do cracked exhaust manifolds have any tell tale symptoms?