What are the causes of unstable motorcycle idle speed?
1 Answers
Unstable idle speed can be caused by the following reasons: 1. Inaccurate ignition timing, leading to poor idle performance; 2. Air leakage in the engine; 3. Incorrect spark plug electrode gap; 4. Clogged idle jet in the carburetor; 5. Incorrect gasoline octane rating (too low octane number); 6. Blocked air filter or muffler; 7. Poor quality gasoline. Motorcycle idle speed (commonly known as "small fire") refers to the operating condition when the engine is running without load while the motorcycle is stationary. The idle speed directly affects the motorcycle's fuel pump quantity, and excessively high idle speed will also affect the motorcycle's fuel consumption.