Carb tuning has been a popular topic for us and our readers.

Over the past few years, we’ve done several posts on the topic. The process itself can be a little tricky and very trying — especially for novice wrench-turners — so we thought we’d take the work out of finding good information. That’s why we’ve taken our most popular carburetor tuning video posts and brought them all together here. Now, if you bookmark the page, you’ll have tons of valuable information readily available without having to visit multiple sites or pages.

In the videos below, Summit Racing‘s Norm Koval provides an in-depth look at some of the most common carburetor adjustments.

Carburetor Main Jet Tuning

Get techniques and tricks for adjusting the primary and secondary jets and learn about the venturi effect. What is the venturi effect? Watch the video to find out.


Carburetor Idle Adjustment

Carburetor not idling smoothly? Learn how to tune your Holley carburetor for a smooth idle by dissecting the idle circuit. It’s like biology lab for your car.


Carburetor Inlet Tuning

Find out how to tune your carburetor inlet circuit for maximum performance.


Electric and Manual Choke Tuning

Learn the differences between an electric and manual choke and find out how to locate the right choke position. It’s information you can use, especially on a cold February morning!


Holley Carburetor Secondary Circuit Tuning

Unlock the secrets to tuning the secondary circuit on a Holley 4-barrel carburetor.


Carburetor Power Valve Tuning

Maximize acceleration with Norm’s tips and tricks for power valve tuning.

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Author: David Fuller

David Fuller is OnAllCylinders' managing editor. During his 20-year career in the auto industry, he has covered a variety of races, shows, and industry events and has authored articles for multiple magazines. He has also partnered with mainstream and trade publications on a wide range of editorial projects. In 2012, he helped establish OnAllCylinders, where he enjoys covering all facets of hot rodding and racing.