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 ...

Tuning a carburetor to supply an engine with the correct jetting-air/fuel mixture has always been a job that almost impossible for most hot rod owners and tuners. In the past, most performance engine ...

Tuning your engine with the aid of an air/fuel meter can really help you dial in your carburetor. But what numbers should you aim for? When people talk about the air/fuel ratio of their engine, do you ...