Hi everybody

I'm not very experienced with engines, but I have a question. Why does the distance from needle valve to carb effect how long it takes for a change to happen? When you open the value, the engine should be able to draw more fuel instantly, no mater how far the needle valve is. The fuel tube berween the needle valve and the carb is airtight, the carb tries to draw more fuel than the needle valve allows it to, so when you make a change to how much fuel goes into that part of the fuel line, instantly the carb should be able to draw more or less fuel from the other end.

That's just my theory, based on the little I know about model engines and the knowledge I have on physics. Am I wrong?

Serafim