Got around to doing an oil change and swapping my spark plugs today. While underneath I decided to look around the manifold to check to see if its cracked since I've read a lot about how prone these are to cracking. I've got some tapping noise that sounds similar to some of what I've heard in other peoples videos and I'm not sure if its in the engine or from a cracked manifold. Best why I can describe it is a quick tapping sound, definitely sounds louder when I got down down on the ground near the tire - when up around the hood/engine area it is a little quieter and seems to be a little louder on the drivers side than the passengers side (which is the side of the tube in the pics below).
These are the only two pictures I snapped while down there, thought they'd be good enough but now that I look at them on the comp I'm not sure. It looks like a crease but I'm not really sure how these are supposed to look.
In addition to that, I found something nice that I somehow missed when checking out the Jeep originally.
Not that I can actually weld, but this looks to be a pretty bad job. The bracket is re-welded onto the axle, which I can only assume means it was broken off at some point. Should I be worried about my safety? I've got no knowledge or experience dealing with anything related to this and am a little concerned about it. Anything else I should specifically check? I intend to install a DPG Ultimate Kit and get some 33s in the next month or two.
Final thing - this is the first time I've ever done spark plugs on any vehicle. Here is a pic of the used plugs, they look pretty bad to me but I've never pulled plugs before and don't really know what used plugs should look like.
Appreciate any feedback you guys can provide...