Carburetor Components

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About

A carburetor is a device that blends air and fuel for a vehicles engine. Carburetor components are important in how well the carburetor functions. Well functioning carburetors allow the engine to perform efficiently and can increase fuel mileage. Making sure all the components on a carburetor are working properly, and remain in optimal condition,and increases the performance of the vehicle's engine.

Related Items

Carburetor Accelerator Pumps

When a vehicle accelerates very quickly, large amounts of air and fuel are needed to supply the engine. Air and fuel flow at different rates which can cause a lean mixture causing the vehicle to misfire or stumble for a bit. Since air moves quicker than the denser fuel, a pump is needed to supply more fuel to the mixture to keep it enriched. Read More -->

Carburetor Accelerator Pumps
Carburetor Accelerator Pumps


Carburetor Base Gaskets

Carburetor base gaskets come in many different shapes and sizes to fit different size and style carburetors. The base gasket sits on the top mounting surface of the intake manifold. It is then followed by the thick heat dissipating block and another base gasket on top of that. The carburetor goes on top of this final gasket were it is tightened using nuts to around 20 foot pounds of torque. Making sure the nuts are tightened to the correct specification will ensure a tight fit of all the parts to prevent leaks. Read More -->

Carburetor Base Gaskets
Carburetor Base Gaskets


Carburetor Jets/Jet Kits

A carburetor jet is a little pipe with an opening at the end to create a spraying effect. This jet is located in the venturi, which is at the end of the carburetor. The carburetor jet is used to release fuel into the carburetor were it is mixed in with air to make a mixture that the engine can use. The carburetor is shaped like a tube which gets narrower at one end to create a vacuum. The narrow side of the carburetor is called the venturi which is where the jet is placed. The vacuum in the carburetor tube allows fuel to be suctioned down through the jet. Read More -->

Carburetor Jets/Jet Kits
Carburetor Jets/Jet Kits


Carburetor Metering Parts

All carburetors use either a metering plate or metering block. A metering plate is most common in standard carburetors because it functions well and provides good performance. Vehicles that are trying to get max performance may want to have options which allow them to restrict idle speeds, emulsion bleeds, and have tunable power valve restrictors. A metering plate is not designed to do all of these extra things which is why a metering block can be used to replace the plate. This block allows more room for customization and adjustments. Being able to tune this part of the carburetor is why a metering block is widely used in racing. Many metering blocks also have valves which can be adjustable to accommodate for different setups that can be seen in various types of vehicles. Read More -->

Carburetor Metering Parts
Carburetor Metering Parts


Carburetor Needles and Seats

A needle and seat is two pieces which work together to control the flow of into the float bowl. When the needle is lifted off the seat, gasoline is allowed to flow and enter the float bowl. The carburetor seat is a metal circle with a hole cut out in the middle. The seat is mounted and only allows gasoline to flow through the center hole which is cut out. The seat is usually made out of brass and can have different size holes to allow for different amounts of gas flow. The carburetor seat is the shape of a washer. Read More -->

Carburetor Needles and Seats
Carburetor Needles and Seats

Carburetor Power Valves

A carburetor power valve is a switch which is used to control the flow of fuel. It is used to help make an engine more efficient and increase fuel economy. The power valve works using a spring and vacuum diaphragm which determines when the switch is opened or closed. The power valve is left shut at low engine speeds because the vacuum is stronger which doesn’t allow the valve to open up. When the vehicle is at full throttle, the vacuum in the engine is not strong. This allows the valve to open which allows more fuel to be released along with the jets which are also releasing fuel. The power valve is designed to make sure the engine never has a lean mixture of gas and air at both full throttle, and at idle. Read More -->

Carburetor Power Valves
Carburetor Power Valves


Carburetor Rebuild Kits

Carburetor rebuild kits are sets that come with everything needed to completely rebuild a carburetor. These sets normally include gaskets, jets, springs, needles & seats, nuts, and screws. All of these components in the carburetor are prone to deterioration over time. The carburetor gaskets are also subject to temperature extremes which can cause them to leak over time. The needle and seat use a rubber circle which is wrapped around the needle to make a snug connection to the seat. This piece of rubber will deteriorate over time which can cause uncontrollable leaks of fuel into the float bowl. Read More -->

Carburetor Rebuild Kits
Carburetor Rebuild Kits

Carburetor Throttle Linkage

A carburetor throttle linkage is a bar that connects the carburetor to components on the engine such as the throttle. The throttle linkage is normally a steel bar that varies in length depending on the size engine and components that it needs to link. Having a solid throttle linkage that won’t bend or move will ensure a timely response when using the accelerator. Read More -->

 Carburetor Throttle Linkage
Carburetor Throttle Linkage


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