​​​'13 GTS (V8 NA)

I was left a clue that my coolant leak was from these tubes underneath the intake manifold.

I can't get the intake manifold off. Something behind is holding it back. I think it is what I'm attaching as a picture.


Any advice please?

Thanks in advance!

The thing with wires in the center of the picture, I don't know how to disconnect it?

 

So I got it off this early am. Pelican parts has a picture guide for a Cayenne. Pull the front up, the assembly a little forward and towards the driver side. This gives good access to that cursed plug. Turns out I didn't properly release the locking clip which did not help. Porsche kindly gave some slack though. Then you can move it more forward and pull the vacuum tube. A pic of the results is included. I don't see an apparent leak in the Y shaped coolant tube that NormalFellow advised is the source of my obvious coolant loss. I noticed the coolant reservoir cap is one leak source. I replaced it with a readily available cap from AutoZone. The new cap leaks as well. Could be the K-Seal? Turns out the capacity of the system I deduced as 28L. From the K-Seal instructions I should have used a 16 oz HD bottle. I also did not pour the whole 8 oz bottle in at one time. Maybe that didn't help either. (There is still white smoke coming from the exhaust in our relatively mild cold mornings). Not sure where to go from here. My priority is the coolant loss as every day I drive her I lose some ounces. Also not sure what tool I should get to clean those intake valves? Thanks for any advice you may have...

Ports taped off as instructions note. The valves looked coked as far as I could tell. There's a torque spec for the Y pipe and all those connections. Something like 3.3 Nm. (I'm outside and don't have the document with me. I guess that should be heeded carefully.

 

Oh, and to get this far you have to remove the fancy design covers. The passenger side has a torque thingamajig that's in the way. I ended up loosening both bolts. They are aluminum, and both bolts and nuts need to be replaced once loosened! I'm not planning on reinstalling the design cover. I got two sets of bolts and nuts at the local dealer yesterday. Most likely paid a good amount more than online, $39.xx, but I'll have an extra set if the next owner wants to reinstall the cover on that side.