Testing carburetors on an engine dyno can sometimes be misleading. We've all seen tests showing large-cfm carburetors making more power—even on a small engine that nobody in their right mind would run ...

The choke valve in an engine's carburetor, whether it's a Holley carburetor or another brand, helps a cold engine start by restricting some of the airflow into it. When the engine is cold, the choke ...