What Causes a Motorcycle to Stall When Throttling in Winter?
2 Answers
Motorcycles may stall when throttling in winter due to the following reasons: 1. Poor quality gasoline; 2. Reduced rotation speed of the crankshaft connecting rod mechanism; 3. Battery depletion. Motorcycles are two or three-wheeled vehicles driven by gasoline engines and steered by handlebars. They are lightweight, flexible, fast, and widely used for patrol, passenger and cargo transportation, as well as sports equipment. Motorcycles can be categorized into street bikes, road racing motorcycles, off-road motorcycles, cruisers, and tourers. The method to start a motorcycle is: 1. Use the main stand to support the bike on level ground; 2. Stand in the direction the kickstarter is pressed—if the kickstarter is pressed forward, face forward and kick to start; 3. If the kickstarter is pressed backward, face backward and kick to start.
I've encountered many motorcycles that stall when the throttle is applied in winter. This is usually because the low temperature thickens the engine oil, causing poor lubrication after startup, especially during acceleration when friction increases significantly, leading to stalling. Additionally, fuel tends to congeal into a waxy state in cold weather, clogging the fuel lines or injectors. When the throttle is opened wide, insufficient fuel is sprayed, resulting in an overly lean air-fuel mixture. The spark plug may also fail to ignite due to moisture accumulation from the cold. I recommend warming up the engine for one to two minutes first, using specialized winter engine oil and fuel additives to prevent these issues. Regularly cleaning or replacing the air filter is also crucial, as blockages can cause insufficient air intake. Ignoring this problem may damage internal engine components.
