I have a '77 280Z and am replacing all the rotted/broken/missing vacuum lines, but having some confusion regarding a couple:

* vacuum lines (2) on BPT( (backpressure transducer) valve? (one goes to EGR, where does the other go?)

vacuum line (2) on THERMAL VACUUM VALVE? (two plastic vacuum lines on end of this were broken off and I don't know where the lines should go)

It also seems that I'm missing some "one-way valves" (VDV?) that should be spliced into some of the vacuum lines...how important are these, where can I get them and where are they needed?

Thanks for the help.

Mark

http://www.nissanpartszone.com/components/1980-nissan-280zx_vacuum-piping-223-1388_4.html

I believe that they call this necro-posting. But, at least it completes the thread (dead) for future searchers.