1989 307 Olds CCC vacuum diagram map

A 1.1" Naval 'Chicago Piano' is less complicated.

 

I just picked up one of these engines with car still attached... going to be documenting a lot!

 

The Honda is probably simpler than most American cars because most of those vacuum lines are fixed metal tubes and only join to their components by a short piece of vacuum hose. Metals tubes don't rot out like rubber and you don't have 100 feet of vacuum line running all over the place and sitting on a hot engine.

 

The original lines also had their number printed on the hose. After doing a few carb R&Rs, I got the basic hang of it, but I did take up drawing an overhead view every time I did one (and we did a lot of them).