Based on these photos, where do you think my leak may be?

Both of these metal pipes were dry but the trucks been sitting for a couple of weeks.
Im confused by the obvious gelling on that bolt and why it'd be prevalent there.

 

If that is the drivers side... Throttle Body Heater.

 

Lower intake/valley pan gasket.

Remove upper manifold, then lower manifold/fuel rail. Not a horrible job, and you do not have to remove fuel rail from lower manifold...it comes off with it, just undo the fuel line.

Brian.

 

Update and question........

Based on receipts I have, it would appear my ignition coils are original - 220k miles on the original Bosch coils.
Replacing them anyway since I have it all apart and the location is probably one of the dumbest things I've ever seen.
Installing STI wires and Bosch double iridium plugs.

Intake plenum bolts were loose.
Lower intake bolts were all loose - one turned with my finger.
For anyone else reading this, you cannot get to the front 4 lower intake bolts without removing the alternator, ac compressor and its bracket.
Which means, removing belt pulley and ps pump pulley to be able to remove the bolts to the bracket, slide it forward enough to get to the two front bolts on that side.
None of this is difficult though......
Removed fuel rail and lost one o-ring cap, most of the others are broken. $20 for service kit or $70 for cleaned, tested and refurb'd set of OEM.
I went with the set.........

So - I did remove all 12 bolts, one at a time, in order of the RAVE instructions - added blue loctite and reinstalled.

Waiting on coils, injectors and throttle body gasket before I can put anything back together.
Pulled throttle body off so I could clean it......

My question, if you're still reading, is this........ The throttle body heater - I know a lot of folks bypass the heater, but curious since I have the intake off, why I couldnt just redirect that hose right to the intake vs joining them together with an adapter??

 

TB heater probably not very necessary in SC but in the colder months Dec-Feb it definitely serves a purpose. Since you already have everything apart probably easier to just put in a new plate with a very thin coat of black RTV both sides of the new gasket.

 

Its actually not leaking and there is rtv oozing out around it so apparently it had at some point.
I'll probably just put the hoses back but was curious just the same.......

 

apply a thin bead of rtv around BOTH sides of the lower intake gasket at the front AND rear coolant passages. If the new gasket does not fit the head runners/bolt holes well, you may have to fiddle with it to get best alignment. Test fit before RTV....

 

I like to put the two rubber end strips in place, with ultra gray permatex applied liberally in the corners and lightly long top and bottom, then set gasket in place with light coat of ultra gray, install frt and rear steel strips over each end, start bolts, but just leave them somewhat loose, this will help hold the gasket in place, but allow you some wiggle room, then set lower intake in place and apply downward press lightly on center of intake, start bolts on each side in a back and forth pattern.

Yes, if you are going to eliminate the throttle heater...you can just attach hose to intake from reservior.

Brian.

 

Sounds good, but I would personally steer clear from any Bosch spark plugs. These engines do very well with Autolite, Denso, or NGK Platinum/Double Platinum/Iridium. If the Bosch plug has the center electrode flush with the insulator = DO NOT install them. They will quickly foul and cause misfires. I haven't bought Bosch plugs in years, but if they've re-designed them and the center electrode looks like a normal spark plug then you should be fine. However without a doubt the flush ones foul on any LR engine very very very quickly.

 

I did not replace the valley pan gasket - just retorqued the bolts as advised on several older threads I found on the subject.
The gasket was actually replaced a couple of years ago by a LR shop.

I bought the Bosch after reading way too many threads about spark plugs and how great the Bosch were... LOL
These do look "normal" per your comment/description.