Open vacuum port?

B

BigAl331

Junior Member
I was looking over my '82 Johnson 150 and found an open vacuum port directly below the bottom carb. I downloaded a manual but I can't find anything about the vacuum hoses. Does anyone know what goes on this port? Is it needed or can I cap it off?
 
The one below the carbs goes to the air damper cover.
Look on the back of it and you will see another nipple.
 
The carburetor intake.
The flame arrester.
The big cover that takes up all the space on the front of the engine.
Hell, I can't *****, I don't even have a picture of mine.
 
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tsubaki said:
The carburetor intake.
The flame arrester.
The big cover that takes up all the space on the front of the engine.
Hell, I can't *****, I don't even have a picture of mine.
Click to expand...

There is nothing in the carb cover that moves so why need vacuum.

I plugged it with piece of hose and screw.
 
the cover he is talking about is the plastic you have to take off to look down the throats of the carbs.
i think the hose takes excess fuel in the intake manifold and returns it upstream of the carbs to be sucked back in the engine


i think?
 
Correct phat.
That year air intake cover should be aluminum.
On the engines we had, where the cover was missing, we made sure there was a hose (a couple of inches longer than from the nipple to the front of the carbs) attached so as to either remember what it was or to keep creatures out. All of them always vented fuel.
Here is one off a 50 horse.
johnson012.jpg
 
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