Has anyone here experienced a light knock sound coming from the engine when you press the gas pedal? So when I press the gas pedal and when the needle reaches 1000 rpm, that's when I hear the light knock sound and when I release the pedal, and it touches the 1000 rpm as the needle goes down, I'll hear again the knock sound... the sound is not continous, even I hold the pedal.
it only happens when it reaches 1000 rpm from idle. I dont know if this is normal. My car is NX250 2022

I haven't open the hood yet to identify where the sound is actually coming from as there's no one to assist me pressing the pedal while Im in the front of the car.

tnx