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Carburetor Tuning Basics Air Valve

 
 
Carburetor Tuning Basics Air Valve
Carburetor Tuning Basics Air Valve
These are the secondary metering rods. They are precisely matched to their jets and the engine's specifications. On a Quadrajet, the secondary air valve opens and moves the metering rod lever upward. This lifts the metering rods, increasing the amount of fuel that can flow through the secondary jet orifices. The vacuum brake allows the air valve to open and meet engine load demands. View Related Article
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Classic Trucks
Classic Trucks