10-11-18, 06:34 PM
(This post was last modified: 10-11-18, 06:36 PM by His Dudeness.)
When the bike is idling the throttle is closed so the butterfly valve is closed so very little fuel air mix can flow through the main opening in the centre of the carb so to keep the bike running at idle you need another path for the air fuel mix to flow through, that's the idle circuit. How the idle circuit works is air comes in the pilot air jet, flows to the holes in the side of the pilot fuel jet, at the same time fuel is drawn up through the centre of the pilot fuel jet, the air and fuel mix and the mixture comes out of the transfer ports and out of the idle mixture port. That's about as well as I can explain it in words. If that doesn't make sense have a look at the video below and if might make sense
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You're right about the choke. Sometimes it is a second butterfly type valve that closes when you pull the choke lever and that chokes the amount of air and that make the mixture richer. But on Fazers instead of a valve that chokes air it's another fuel circuit that increases the amount of fuel rather than a plate that restricts air.
! No longer available
You're right about the choke. Sometimes it is a second butterfly type valve that closes when you pull the choke lever and that chokes the amount of air and that make the mixture richer. But on Fazers instead of a valve that chokes air it's another fuel circuit that increases the amount of fuel rather than a plate that restricts air.