Why does the New Santana's idle speed automatically increase when the clutch is pressed?

[GiaDella]

New Santana's idle speed automatically increasing when the clutch is pressed is due to excessive carbon buildup in the idle valve or the system's throttle compensation. Below are the detailed explanations for the reasons: Excessive carbon buildup in the idle valve: It is caused by excessive carbon buildup in the idle valve or poor performance of the valve itself. High idle speed naturally leads to increased fuel consumption, and high fuel consumption is mainly related to unstable engine speed. Additionally, when the engine's fuel supply is constant, the lower the load, the higher the speed. When the clutch is pressed while driving, the engine has no load at all, so the speed naturally increases. Automatic throttle compensation from the system: After pressing the clutch and releasing the throttle, the computer automatically provides throttle compensation to prevent the engine from stalling, resulting in an increase in engine speed. Generally, the speed does not increase significantly. If the speed rises excessively, it is recommended to visit a 4S shop to check if there is a fault in the engine computer.