1974 cj5

[Don2018]

I'm starting to get our old cj running after years of neglect. I got it started and drove it but it runs rough. The first thing I want to do is get the engine running well. Most of the vacuum lines were disconnected and cut by other individuals! My question is, how important are all the vaccum lines on the 6 cylinder engine? Do they need to be connected and working for the engine to run correctly or do they just get in the way? Should I figure out where thy all go and reconnect them or could I leave them off? Any advice to help me get started would be appreciated.