Home › Forum › Ask A Member › Flow-Chart for OMC Carburetors?? › Re: Flow-Chart for OMC Carburetors??
Don’t forget, that while idling, only one of the metered holes in the fuel well is allowing fuel into the motor but as the throttle is opened up, the other holes are exposed to the low pressure air flow allowing more fuel in until finally, the throttle is open enough to allow a large enough volume of air to pass thru the venturi to create enough of a vacuum to draw fuel up through the high speed nozzle. The small bleeder holes in the nozzle allow air into this fuel flow to make it come out in more of a mist instead of in large droplets as it would without the bleeders. This process, when working properly, is what gives a smooth transition between low and high speed operation.