Is it okay to engage second gear without pressing the accelerator?

[McEvan]

Engaging second gear without pressing the accelerator is not advisable. When a car is in gear without the accelerator being pressed, it may cause the engine to stall (or barely start with severe jerking), which can damage the vehicle. Definition of the accelerator: The accelerator, also known as the "throttle," is a control device that regulates the engine's power (thrust). How the accelerator works: For gasoline engines, the accelerator controls the throttle valve opening, affecting the engine's air intake. When the accelerator is pressed, more fresh air enters, and the ECU increases the fuel injection accordingly, resulting in greater combustion force and higher engine speed.