are our asking about the bowl vent sol? not sure, what color is that wire again? ([c] black/yellow on diagram, from 15a IG2 ) these might help. sorry bad pictures, that 15a fuse only powers that sol, don't know the location in box, so just check all the 15.
https://robrobinette.com/Honda_ACTY.htm#Fuse_Box none of the labels say "vent" or some thing like that, maybe this truck is FI . so might be "spare"
There are 2 selonoids both are on the side by the linkage under the choke. One is the fuel cut off the other is called air vent selonoid. It doesn't have one in the bowl. The fuel cut off works. The wire is covered by a green cover.
air vent Valve, Opens the bowl vent, to the intake inlet , to vent vapors, when powers is OFF. Closes, bowl vent, and Opens to hose, to vent carbon canister to intake when On. I still am not sure of location of fuse in box, but that part should be easy to determine .
Thanks I will check all fuses again. For now I connected it to the fuel cut off power and it runs good
I’m in the process of figuring out an intermittent stalling problem where my fuel cut solenoid loses power. Seems like both fuel and air solenoids are controlled by a brown box under the dash on the drivers side with 2 connectors going into it.
I had no power going to the air vent selonoid then I discovered the cooling fan not working. The fuse to the cooling fan was missing. I replaced it now both work. Cooling fan fuse is second from the top on the left side. 15amp