When I bought the car it simply had a cut vacuum line with a screw in the end, I just put a regular vacuum cap on it for now, but I would really like to know what this runs to on the car!

The motor is an F22A1 in a '91 Accord LX.

Any help is appreciated!

 

Was there a number on the hose that was there. Also, there should be a diagram under ther hood with the hoses.....It might just be a spare.

 

Got cruise-control? Maybe that port is for the CC unit, on an EX car...?

 

Autozone shows the vacuum line diagrams, looks like some of the hoses were re-routed.

| Repair Guides | Vacuum Diagrams | Vacuum Diagrams | AutoZone.com

 

I downloaded the diagram from AutoZone's website, turns out the vacuum line that was missing went to the intake control valve solenoid! The help was greatly appreciated!