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Carb flow diagram

igfrey

New member
I was looking for a view of th

I was looking for a view of the flow path
for a 1989 120hp Evinrude carbs. Basicaly
a diagram of the gas flow through showing the
differnece from idle to WOT.

Thanks
 
"David, I do not know if that

"David, I do not know if that exists. Normally gas will flow thru the idle passages when the butterfly is completely closed. Look on the carb for idle (gas) jet and some small holes drilled into the carb venturi (throat). Now try to find the air inlet for the idle circuit. It will consist of any holes drilled in the butterfly, plus a passage drilled into the venturi.

The high speed gas passages will have a main jet ususally in the bottom of the carb, and a main nozzle just behind the butterfly."
 
"unless you are planning on bu

"unless you are planning on building your own carb, just rebuild it and move on. there are diagrams, but they would not help."
 
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