86 720 z24i Vacuum Repair for CA smog

1980-1986 Datsun 720 forums. All 720-specific topics and discussion can be found here.
Posts: 4
Joined: Wed Sep 06, 2017 11:13 am
Car: 1986 720 4x4 King Cab w/ Z24i

86 720 z24i Vacuum Repair for CA smog

Postby xeroxcat » Thu Sep 07, 2017 11:10 pm

Just got a 1986 720 with the z24i engine. Doing repairs to hopefully get it smogged in the next couple weeks. It needs a new gas cap and is running rich, but also failed the visual inspection, as one of the vacuum hoses was disconnected. The image below is the vacuum diagram for the 720 z24i with the one line that I can't find a connection for.
I know from the '86 service manual that on the carbureted z24 this hose connects to the vacuum advance, but my distributor does not seem to have a vacuum connection for it. To corroborate that I have the correct distributor, these diagrams for the z24 distributor have a vacuum advance, while the z24i distributor does not.
^z24 (vacuum advance in upper right corner)
Where does that vacuum hose go though? anyone have diagrams or the supplement manual for the z24i?

Posts: 2
Joined: Thu Jan 10, 2019 12:33 pm
Car: 1986 Nissan 720 ST 4x4 z24 injected

Re: 86 720 z24i Vacuum Repair for CA smog

Postby 69roadster » Thu Jan 10, 2019 4:28 pm

I have the same issue did you ever get this solved?

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