What Are the Reasons for RPM Drop or Even Stalling When Depressing the Clutch?

[VanRowan]

Reasons for RPM drop or even stalling when depressing the clutch include: incorrect driving operation and improper air-fuel ratio adjustment in the engine system. Incorrect driving operation: Releasing the clutch too quickly can cause vehicle shaking, significantly increasing the likelihood of stalling. In this case, it's necessary to release the clutch slowly or press the accelerator to increase power. Whether releasing the clutch too quickly or too slowly, the vehicle may shake. At this point, pressing the accelerator to better match the engine RPM with the vehicle speed is required. Poor coordination can also lead to stalling. Improper air-fuel ratio adjustment in the engine system: When the clutch is depressed, especially when transitioning from a no-load state to a load state, it can cause unstable engine RPM. Common engine faults include poor operation of a certain cylinder, such as damage to the ignition coil or spark plug; insufficient working pressure in the fuel system; excessive carbon buildup in the throttle body, leading to sticking or inaccurate measurement of air intake. In such cases, a detailed inspection at a repair facility is necessary to further confirm the cause of the fault.