Most modern motorcycles do not have a manual choke. The use of manual chokes has become less common in motorcycles due to advancements in fuel injection technology.
In older motorcycles, particularly those with carbureted engines, a manual choke was often used to control the air-fuel mixture when starting the engine or riding in cold weather. The choke helped enrich the fuel mixture by restricting airflow, which compensated for the increased density of cold air.
Fuel injection systems automatically adjust the air-fuel mixture based on various sensors and inputs, such as engine temperature and throttle position, to optimize performance and fuel efficiency across different operating conditions. This eliminates the need for the rider to manually adjust the mixture with a choke.
Modern motorcycles with fuel injection systems have electronic control units (ECUs) that manage the fuel delivery and other engine parameters. These ECUs continuously monitor and adjust the fuel-air mixture based on real-time data from sensors, ensuring optimal performance and smooth operation under various conditions.
That said, it's worth noting that some older or more specialized motorcycles, such as vintage or off-road bikes, may still have manual chokes due to their carbureted engines. Additionally, certain motorcycles designed for specific markets or purposes may still incorporate manual chokes as per the design requirements or regional preferences.