Carb 809011

D

Douglas8589

Forum Newbie
Hello, newby here. I have a question concerning the upper carb body. There is a hose connection but I am not sure what it is for, vacuum maybe? It does not appear to have anything to connect it to, should it be capped off? Thanks for your help
 
Hmmm appears that you have v-twin Vanguard engine. That port is vent line that either goes to the air cleaner, Vapor recovery system, or the fuel tank. Sorry the service manual just don't indicate exactly where it goes to.

Edit: And on some engines that they just put a length of tubing on it and dangle it down the side of the engine.
 
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Thank you. You are correct, it is a vanguard v- twin. I assume I can cap this off since I have none of the connections you mentioned? Since this is a gravity fed carb do you think leaving this open could affect fuel flow ? Thanks again
 
Thank you. You are correct, it is a vanguard v- twin. I assume I can cap this off since I have none of the connections you mentioned? Since this is a gravity fed carb do you think leaving this open could affect fuel flow ? Thanks again
StarTech said:
It need to be vented as capping it off will cause problems.
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Thanks again.
 
The tube is the bowl vent for the carb. Capping it will cause the carb to overflow and/or syphon fuel from the tank.
 
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