458 - what do these hoses do and connect to?

(posted to 458 sub forum too)

Hey guys,

I have been looking at the parts diagrams online but unfortunately, it is hard to see all of the hoses, and where they connect to. I think the vent tubes that connect the air inlet hoses to the oil tank are items 8 & 9 in the attached image below, is that correct? Are the vent tubes to allow air from the oil tank to vent into the air intake stream? If so, is there any risk of oil droplets in the air being sucked into the air intake? Or are these tubes to create vacuum in the oil tank to help draw oil from the crankcase? Also, what does assembly item 15 connect to (red arrow) and what is it supposed to do? It looks like it's made up items 50, 51, and 52, and it's an assembly of 3 hoses, with hose item 50 going into the oil tank. I can't tell what the other two hoses run to. Do they run to each valve cover? Also, what does the hose assembly items 4-7 connect to and what does it do (circled in orange)?



'm also curious what is the purpose of this 3 hose assembly (highlighted in yellow below) and where does it connect to? It looks like it goes to each valve cover but the third connection, I do not know. And I can't find this item in the online parts diagrams at all.



I also noticed this hose at the top of the intake manifold but on the passenger side only. I can't find this in any of the online diagrams. Any idea what this hose does and connect to?



Thanks guys for any help!

Ant