Nissan Repair: A/C dashpot vacuum line, datsun 720, vacuum line

Question
I've got a 1981 Datsun 720 pickup with the NAPS-Z22 engine manual trans. I was wondering, there is a vacuum line hookup on the dashpot on the carb, and I can't for the life of me find out where its supposed to hook up to. I was hoping you can tell me where it hooks up. Thanks!

Answer
Saul,

Some hook up to vacuum and some do not.  The port was left exposed rather than making a separate dashpot.  The hood sticker should show you if there is one.  

If the idle is fine I would not mess with it.  The dashpot usually bumps up the idle on automatic vehicles since the transmission loads the engine.  Remember, not all use the vacuum port.