Reviving a long dead RX4 wagon and trying to sort out the vacuum connections. Can anyone tell me what hose goes onto the check valve nipple on the driver side of the carb above the two oil injection ports and directly above the air adjustment jet? Thanks.

 

Sub-Zero fluid. Just ignore it.

That's a pic of my carb I shot several years ago.

 

Ok, thanks. Sorry for borrowing the pic to illustrate but thanks for posting it.