Can the Idle Speed of an EFI Motorcycle Be Adjusted?

[DiAnnie]

Currently, domestic EFI motorcycles are divided into two systems: one with adjustable idle speed and one without. For the adjustable type, the idle speed adjustment screw is installed on the air passage next to the throttle body. By adjusting the idle speed screw, the air intake is controlled, thereby adjusting the idle speed. The non-adjustable type is set by the computer program. If there is unstable idle speed, it is definitely caused by a vehicle malfunction. Mechanical faults: Valve leakage, negative pressure pipe leakage, or injector malfunction, resulting in poor atomization. Clogged or leaking fuel injectors causing the mixture to be too lean or too rich. Excessive fuel pressure causing the mixture to be too rich, or insufficient fuel pressure causing the mixture to be too lean. Clogged fuel filter, faulty fuel pressure regulator, etc. Faults due to incorrect sensor signals: Such as throttle position sensor, intake air temperature sensor, intake pressure sensor, oxygen sensor, etc. Damage to the sensor or short circuit/open circuit in the sensor wiring causing incorrect signals. After receiving these incorrect signals, the ECU computer is confused, struggling, and under immense pressure, unable to accurately determine the required fuel injection amount for the current operating condition, resulting in unstable idle speed.