So did you ever figure out the spark plug torque on your 1.4T?
Feeling guilty, I looked through my 2020 USB Service Manual again. In the 1.4T section, there's a link supposedly to spark plug torque; but that mistakenly links to specs for the 1.0T
engine (so 0.999 liter displacement, and three cylinders!!). And there's no spark plug torque listed there.
Regarding spark plug tubes, it looks like they're a feature of your 1.4T; not generally of Renegade engines. Here's removal of the spark plugs on your 1.4T -- I think you can see the tops of the tubes, with the spark plugs themselves well down inside them:
And here's your cylinder head, with the head cover removed -- those seem to be the tubes at my red arrows:
In contrast, here's the cylinder head on the 1.3T like mine -- looks like the collars that the spark plugs go down into are integral to the head itself: