Cool, I remembered that venturi effect (though I didn't know the name) after I posted this. I figured this would probably how fuel gets drawn up from the carby bowl. Didn't know about the grooves in the carby needle or that it was tapered until you both explained that now. I have to muck around with the throttle cable more and rip it apart I think. The sticky spring gives me the shiats and needs fixing.


On air intake, I've seen those "Hi-Clone" things for cars that makes the air intake swirl like a tornado. Does this do anything? If yes, what? I'll take a guess and say that it would make the air move faster or perhaps mix the fuel and air better? I know the fastest way to empty a soft drink bottle is to turn it upside down and swirl it to make the water 'tornado' out. Does air move in a similar way?

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