what is this line going to intake manifold?

[fieromx3]

1973 evinrude 50.

in this picture its the line number 36. goes from intake manifold to the intake cover that bolts to the carburetor. i would have taken a pic of the actual line but need new batteries and all stores are closed today! merry christmas! lol beside the fitting on the manifold is another fitting that has a line to the fuel pump.

im thinking kind of like a pcv valve line to run back through the intake like on a car?? not sure if 2 strokes need to vent crankcase pressure :/

 

[Faztbullet]

Re: what is this line going to intake manifold?

It is for the air box drain, when you tilt the engine fuel will sometimes leak from the carbs. This settles in bottom of air box and when you lower and restart the engine it is drawn in and burned so there is no water pollution or fuel leakage under cowling. Sort of like the PVC system on a auto.

 

[fieromx3]

Re: what is this line going to intake manifold?

awsome! thanks very much