vaccum lines

[bayliner12]

I have a 1990 120 HP force dual carbs, the lower carb cover has a vaccum port unplugged, it doesnt act like a vaccum leak but i'm wondering if there is. does anyone have a routing schematic?

 

[12Footer]

Re: vaccum lines

That's probably the bowl's overflow port. Just a stab in the dark,because i no longer own any Force manuals.
Besides, a vacuum leak at the bowl would not be as much of a problem as it would in a hose or bulb (just increasing air-to-fuel ratio).