I needed the same thing. I went to sale websites and looked for pics people had taken of their engines until I found what I needed.
You can find a one line vacuum diagram for 1997 Nissan 1.6 liter engine in the owner's manual. You can also find it at various auto stores.
At the Nico website
When replacing or making changes to the vacuum line of a car, it comes in handy to have a diagram. A diagram for this cars vacuum line can be found in the maintenance manual.
AUTOZONE.COM
look on e bay, they had a use Nissan service manual for 5.00
Shop manuals are the best place to find the diagrams but there is also a vacuum diagram sticker stuck to the lower right of the inside of your hood.
You can check junkyards,eBay, and other sources.
look at the under hood diagram
Mithell Manuals online 14.99 a month. You won't find it for free. local library brought up the vacuum diagram on the computer for me cost 25 cents 25 cents was for print out
Maybe if you would google your question, it would pop up....
You can find a Nissan engine diagram at most Nissan dealerships. You can also find the Nissan engine diagram at most auto-parts stores. The
it should hav a vac diagram under the hood on a sticker http://www.nissanpartszone.com/components/1980-nissan-280zx_vacuum-piping-223-1388_4.html