Why does the motorcycle always stall when stopping?
2 Answers
Reasons why the motorcycle always stalls when stopping: 1. There is air leakage in the engine; 2. Incorrect spark plug electrode gap; 3. Clogged idle jet in the carburetor. Solutions: Adjust the throttle adjustment screw and air adjustment screw. If there is still no idle, remove and open the carburetor, use a steel wire with a diameter less than 0.4mm to clean the idle jet and idle air passage, then use an air pump to blow out all the holes, or check if the fuel level in the carburetor float chamber is too low or if there is air leakage in the reed valve or crankcase. A motorcycle is a two-wheeled or three-wheeled vehicle driven by a gasoline engine, steered by handlebars, lightweight and flexible, fast-moving, widely used for patrol, passenger and cargo transportation, and also used as sports equipment. Generally speaking, motorcycles are divided into street bikes, road racing motorcycles, off-road motorcycles, cruisers, and touring bikes.
I've been riding motorcycles for several years and have encountered quite a few instances where the engine stalls after stopping. The most common cause is an idle speed that's set too low, causing the engine to fail to maintain RPM and stall. Improper adjustment of the idle screw or a dirty throttle body with excessive carbon buildup, leading to poor airflow, can also trigger this issue. I once had an old bike that would stall at every red light—after a lengthy inspection, it turned out the spark plugs were worn, causing poor ignition, and replacing them fixed the problem. Another possibility is an incorrect air-fuel mixture, such as a clogged air filter or carbon buildup on the fuel injectors affecting fuel delivery. Poor electrical connections or an ECU programming error could also be culprits. My advice is to start with the simplest checks: use the idle adjustment screw to increase the RPM (manufacturer manuals usually specify the standard value). If that doesn’t work, clean the throttle body or replace the air filter, and avoid frequently pressure-washing near the engine bay. Regular maintenance goes a long way in preventing these headaches.
