The carburetor is one of the most important parts in automobile engines. The carburetor ensures that there is the right mix of gasoline and air in the engine so that the engine functions correctly. Too much air or too much gasoline in the mixture causes damage to the engine, so a carburetor is very important in all stages of the engine functioning. Carburetors are generally found in old cars and in small engine automobiles like 2-wheelers, lawn mowers, and chain saws. All new cars use the fuel injection technique instead of carburetors because of its low emission levels and fuel efficiency.

A carburetor is just a tube with an adjustable plate called the throttle placed across it. This throttle controls the amount of air that flows through the tube. The carburetor tube narrows down at a place called the venture, where a vacuum is created. There is a hole in this narrowing called the jet that allows the fuel to be drawn in because of the vacuum. There are several parts in a carburetor that allow for smooth functioning. They are the pilot, pilot airscrew, throttle valve, jet needle, needle jet, air jet, and main jet.

Carburetor kits are a complete set of carburetor parts that can be easily assembled and placed in an engine. These kits are pre-tested and pre-jetted. Most carburetor kits contain parts for replacing broken down parts within the carburetor. They can be customized to fit the exact model of the carburetor. There are carburetor kits available for Harley-Davidson, Triumph, and Norton bikes. Carburetor kits are very important since very few cars and bikes use carburetors these days so carburetor kits help to keep old Harley-Davidson engine running, for example. Though all carburetors are not the same, there are some common makes of carburetors for which kits are readily available at automotive dealers' stores. Kits for specialized carburetors are available at specialty automotive stores.

There are several websites on the Internet that contain information about carburetor rebuilding. These sites also provide carburetor rebuild kits for many car models including pickup trucks, SUVs, vans, and recreational vehicles. These kits can be ordered online and are usually shipped on the same day. They also provide professional support by technicians who would take a look at the engine and help to decide the best carburetor kit for rebuilding the carburetor.