let me ask this then when does the needle actually start working cause when i turn the throttle the butterfly thing just opens, then those lines i put pressure to them(via the mouth) and all that happened was gas comming out where the neeldles sit
The needles will not open unless the carbs are on the bike and the bike is running. The needles work off of the vacuum from the engine. Applying air as you stated to the line that you are referring to will do nothing. That line is an air vent tube. It doesn't activate the needles. It allows the carbs to vent.
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