Reasons for Unstable Idle Speed and Easy Stalling When a Motorcycle is Warm

1 Answers
Boromir
07/29/25 9:00pm
Idle speed is based on a warm engine, and it will automatically be lower when the engine is cold. At this time, unstable idle speed is a relatively normal phenomenon. You can use the choke during starting and preheating to prevent stalling. If the idle speed remains unstable after the engine is warm, you can check if the idle speed is set too low, readjust the idle speed, and verify whether the carburetor's air-fuel mixture ratio is correctly adjusted and if the spark plug is functioning properly. Here is some related information about idle speed: 1. Introduction: Idle speed refers to a working condition when the engine is running without load. When the engine is running, if the throttle pedal is fully released, the engine is in an idle state. 2. Hazards: When adjusting the idle speed, the RPM should not fluctuate abruptly, as this can cause premature wear to the engine. It is best to have the adjustment performed at an automotive repair facility.
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