How a Carburetor Works

These are general examples of how each type of carburetor moves air. Generally speaking these are not interchangeable, you can’t...

This is just an example of one type of carburetor, but it will give you an idea of how fuel...

Some carburetors are equipped with a governor of which there are many types. The governor limits engine speed and are...

The below illustrates a Carter YF carburetor, other models will work in a similar way. An accelerator pump using either...

We will not discuss the manual choke here. There are several types of chokes used on carburetion systems. Integrated heat...

The float circuit includes the float (brass, or nitrophyl), needle & seat, or float valve, bowl vent & float bowl....

A venturi is a restriction in the carburetor air horn. Air is forced through the venturi and when it goes...

THEORY As a liquid, gasoline is of very little use to an en­gine. Its energy can be released only by...

Some carburetors don’t use a metering rod. The main discharge jet remains a fixed size. Another jet, called a power...

When the throttle valve is opened past the idle and low speed ports, it allows air to start flowing through...

When the throttle valve is closed to slow the engine to idle speed, the main discharge nozzle stops supply fuel,...

You will see a slot opening just above the throttle on the throat of the carburetor. This is the idle...

How a Carburetor Works Fuel enters the carburetor through a fuel inlet. The float regulates how much fuel to let...