83 GL1100 carburetor throat

[piero]

Please, click on the picture to enlarge it. Do you know what are those two holes, one large and one small (air, fuel jets?) in the throat of my 1983 GL1100 carb #4? The small hole may be the accelerator pump jet output, but.....what about the large one?

Thank you for your help
Piero

[indianakid]

the large port is the vacuum passage that controls the idle air cut off valve. the small port is where the idle mixture screw needle point comes through. i also added pictures a while back showing where the other passages in the carb body go. here is the link.........

viewtopic.php?f=4&t=7561&p=35775&hilit=carb#p35775

Good Luck.

[piero]

Thank you, Indiana kid!
Now I remember that the accelerator passages to the carburetors are in the area of the carb facing the plenum and I tested them, on each carb, with a water pick as suggested by Randakk. Thank you again for your help.
Piero