This is way too oversimplified in the way that it's asked. And it likely won't lead to productive discussion here.
Momentum in the - I'm assuming - traditional sense of how people define it here, will not carry over from game to game. That's the adrenaline boost you get from a big goal, etc.
However, different circumstances create different scenarios.
More uneven series, for instance, carry with them other factors (read: nothing like Jets/Preds, two even teams). If you're a dominant #1 seed playing a cannon-fodder #8: #1 just runs you out of the building in games 1 and 2, and then in game 3 it's an even game and that #8 seed is starting to believe...and then boom, the top team drops three goals in 5:17 and it's a 5-2 final. It might not be termed as "momentum" traditionally, because it's really not. But there are shades of mentality that go through a series...when "intimidation" becomes "doubt", after you get to 5-2 there when that #1 seed goes all globetrotters on you, that "doubt" becomes "acceptance" for a lot of guys on a lot of teams...sometimes you just know that the team across from you is just better. That will absolutely carry into game 4...I don't consider that "momentum" which is housed within an individual game. But it might be the carryover you're attempting to look for...
I've coached on both sides of series like that - where there's a "belief" from an underdog team and then there's what I outlined above, which is that "doubt" -> "ugh, **** me..." or whatever terms you want to use...again, I don't think that's "momentum" but it's another part of the mental aspect of the game that if you're not in and around the game all the time, you can't really account for it.