What are the reasons for difficult cold starts of motorcycles in summer?

[LeDiana]

Summer motorcycle cold start difficulties are related to engine oil and the motorcycle's air filter. Reasons related to engine oil: In general troubleshooting of cold start difficulties, engine oil is the primary consideration, especially in northern regions. If the engine oil is selected incorrectly, it can lead to difficulties in cold starts. The viscosity of the oil is a key factor. Some riders choose oil like shopping in a mall, preferring cost-effective product models, which can lead to inferior or counterfeit oil entering the engine. These inferior oils not only fail to provide the necessary heat resistance, cooling, and lubrication for engine components, but most importantly, they can become semi-solidified in cold conditions, especially in the cold natural environment of northern regions. This causes the oil to adhere to mechanical parts, directly resulting in the engine's inability to reach the required RPM for a cold start. Reasons related to the motorcycle's air filter: The second reason for difficult cold starts is the lack of regular maintenance, particularly the air filter. If not maintained timely, the air filter can become clogged or partially clogged. The air filter functions like a human nose; once blocked, it causes breathing difficulties. The air filter is the only breathing channel for the engine. Once clogged, it not only makes cold starts difficult but also significantly impacts the overall lifespan of the engine.