How to Tune a Four-Barrel Carburetor?

Answer Tuning a four-barrel carburetor for the highest performance requires jetting as well as adjustments. On a four-barrel carburetor, there is a primary side and a secondary side. Both sides are jetted... Read More »

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How to Rebuild a 4-Barrel Carburetor?

Proponents of fuel injection often refer to carburetors as "carefully metered fuel leaks." While somewhat pejorative, this phrase is a fairly accurate description of the purpose and function of a c... Read More »

How to Troubleshoot a 2 Barrel Carburetor?

The ubiquitous two barrel carburetor was used on millions of cars, trucks and vans for many decades before finally being replaced by fuel injection systems. Many vehicles are still on the road toda... Read More »

How to Adjust a Rochester 2 Barrel Carburetor?

Rochester 2-barrel carburetors have an adjustable float, a replaceable main metering jet, an accelerator pump and an adjustable idler metering screw for each barrel. They also have an adjustable el... Read More »

How to Adjust an Edelbrock 4 Barrel Carburetor?

The Edelbrock 4-Barrel carburetor is a mechanism that delivers fuel to the engine and, when mixed with air, creates small explosions in the four cylinder chambers of the combustion engine. While mo... Read More »