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Difference between Fuel Injection and Carburetion in Bikes

Carbureted or fuel injected bike, which is better. This has always been one of the most controversial topics amongst bike enthusiasts. For beginners with the least knowledge, the difference does not matter, they generally make a decision based on many factors like prices, weight, power, or brand. However, for experienced bikers, they need to know whether a bike is a fuel injected or carbureted. It comes to their priority list. No matter what you look for while buying a bike, it is always important to apply for bike insurance online​.  Here is the difference between the fuel systems.


A carburetor was the only basic fueling system used in most two-wheelers, until the introduction of Fuel Injection Systems. The basic function of this system is to mix fuel and air in a certain amount and send it to the combustion chamber, also known as a cylinder. It works by obstructing the airflow of the cylinder. Basically, with the compression of the piston, a low-pressure vacuum is created, which is pulled into the mixture of air and fuel by the tube. The carburetor tube gets narrow at the end which increases the pressure of air flowing. The low-pressure vacuum forces the fuel to be pulled by the small reservoir in the carburetor, which gets mixed with the air-flow producing the air-fuel mixture that makes the cylinder functional. The entire procedure is known as Vacuum Venturi Effect.

Also, many other components support the carburetor functioning. One of them is the throttle valve that controls the amount of air to be sucked into the system.


  • Carburetors are less expensive and can be operated much more easily. They are also easy to repair and replace.
  • Carburetors can be tuned according to the needs of users.
  • Carburetors are integrated separately from the engines, so they can be repaired and serviced or replaced without hampering the engine.
  • They are made up of light material are usually long-lasting.
  • No electrical equipment is required for the installation and hence it is easy to extract and install.


  • They are not the most efficient systems.
  • The slight lag in the carburetors may result in a slow throttle response.
  • Some components of the diaphragm are delicate that can be damaged very easily.
  • The fluctuations in air-fuel concoction affect the smoothness of an engine.

The Fuel Injection Systems
Fuel injection is the more precise fueling system, as they mix the air and fuel more precisely and send them to the cylinder in fine particles. Unlike the Carburetor this system relies on the Electronic Control Unit, which along with other sensors calculates and adjusts the required amount of air and fuel to burn and function the cylinder. This leads to better fuel efficiency and a smoother and quick response from the engine.


  • Precise air-fuel concoction enables efficient combustion.
  • Quick and sharper response from the throttle.
  • Enhanced fuel efficiency and more power than carbureted fuel systems.
  • Comparatively less break down and require zero to low maintenance.


  1. These systems are more expensive than carburetors.
  2. Require advanced tools for service, repair, and replacement, which again is an expensive process.
  3. These systems cannot be customized unless you opt for ECU maps, which again costs a pretty penny.

Whether you are going for a carburetor or an injection fueled system bike, the experts advise you to get it covered under two wheeler insurance to protect it against any unforeseen circumstances.​
Read Also: Fuel Efficient High Mileage Bikes in India