How many types of bike carburetors are there?

Based on the direction of the flow of air there are 3 different types of carburetors.

What are the types of carburetor?

There are two types of carburetors:

  • Fixed venturi – The velocity of the airflow is used to regulate the flow of the fuel.
  • Variable venturi – The flow of raw fuel is controlled mechanically, and airflow is regulated with fuel flow.

What is the most common type of carburetors?

Fixed choke carburetors are the most common type, particularly for American cars and trucks. They are usually downdraft carburetors. Fixed choke downdraft carburetors use the pressure of the airflow to regulate the intake of fuel, essentially filling in the space through which fuel would otherwise flow.

What is a CV carburetor?

CV, or Constant Velocity carbs offer the best real-world performance for day to day riding where your throttle isn’t pinned all the time. the CV carb allows much more precise metering and thus, a less boggy engine under load conditions.

What is Fi in motorcycle?

Fuel Injection (FI): How Does It Work Fuel injection system comprises a complex set of electronic components and sensors. The system depends on a fuel pump to control the flow of fuel to the combustion chamber. This fuel pump is located inside the fuel tank of the bike.

What is a CV type carburetor?

A CV carburetor (Constant Velocity) incorporates a vacuum operated slide that varies the venturi size within the carburetor, thus maintaining a constant velocity. The slide also holds a needle that when lifted by the opening slide varies the amount of atomized fuel delivered.

What is modern carburetor?

In modern design of carburetor the choke made works automatically by using thermostat and spring loading. Throttle is the main valve that controls the engine speed. This valve operated by accelerator vehicle by using mechanical linkage or by using the pneumatic method. It locates at downstream side to the venturi.

What is motorcycle carburetor?

In the simplest of terms, a motorcycle ‘carb,’ or series of multiple carburetors, has the job of creating a combustible mix of gasoline and air that will power the engine and create the driving force to propel the vehicle forward.

How do you read a carburetor tag?

Original equipment carburetors will have two numbers stamped on this tag. The outer circle will be the O.E. part number (ie Allis Chalmers, GMC, IHC, etc.). The inner circle will be the Zenith number.

What are the different types of carburetors?

Updraught carburetors

  • Downdraught carburetors
  • Horizontal or side draught carburetors
  • What kind of carburetor do I Need?


  • Bore and stroke
  • How it will be used most of the time
  • Intake manifold: dual or single plane?
  • Camshaft profile and how it is degreed
  • Rocker arm ratio (which determines valve lift)
  • Cylinder head type: ported or untouched
  • Exhaust system,including headers
  • Aesthetics: do you like the way it looks?
  • What type of carburetors are used presently?

    There are two basic types: the fixed-jet (or fixed-venturi) carburettor and the variable jet (or variable venturi) carburettor. The variable jet carburettor is often seen on motorcycles and in older cars, primarily British cars and Volvo. Stromberg and SU are the best known.

    What are the symptoms of a bad carburetor?

    Symptoms of a Bad or Failing Carburetor Reduced engine performance. One of the first symptoms commonly associated with a bad or failing carburetor is a reduced engine performance. Black smoke from exhaust. Another symptom commonly associated with a problematic carburetor is black smoke coming from the exhaust. Backfiring or overheating. Hard