1991 Evinrude 200 aspirator valve

[Schtoopid]

Can someone tell me what this thing is for? It says water intake, but often times its called an aspirator valve.
It just seems to hang in the back of the block hooked to the tell-tale.
Its #115 in this picture.
https://www.marineengine.com/parts/...rer=Evinrude&section=Cylinder+&+Crankcase

 

[oldboat1]

maybe better for reading: http://www.iboats.com/Cylinder-Crank...iew_id.1557397

 

[oldboat1]

Not clear to me what the aspirator is for -- thinking it was part of a control system that circulated more cooling water to the powerhead under certain conditions, but this appears to be another take: http://forums.iboats.com/forum/engin...88-johnson-120

need additional input....

 

[jbuote]

I'd love to learn about this too.. New to boating, but absorbing as much as I can..
​Everything I've found about an aspirator, is that it either lets air out of the cooling system, and then is a restrictor for how much water comes out of the tell-tale, OR
​As oldboat1 linked to, Some say it just lays in the pan and helps get water out of the pan...
​I guess It depends on the engine?

​Going to follow along and hopefully learn..

 

[Schtoopid]

Well, as a whole, the system is setup so under low throttle positions, pressure is directed through the thermostats to close them so the engine runs warmer. Under throttle, it opens up, allowing the thermostats to operate normally.
The question I have about that valve, is that it doesn't hook to anything, and being hooked to the tell-tale like it is, it looks like water would just fill up the bottom of the engine. Seems silly.
So, I'm assuming that valve is a check valve of some sort, but mine is damaged and doesn't seem to do much of anything. (there is a spring, a ball, and a seat or collar)

 

[racerone]

Is it there to suck water / leakage out of the engine compartment ?

 

[daselbee]

If water gets in the cowl pans...(unlikely)...it is supposed to suck it out.

 

[boobie]

Agree with the above.............