hi guys sup? certainly hope evyone is doing awesome...anyways i have a slight problem with the sound of my car while idling...i can hear (not loud but slight noise) like as if someone pour grains of sand into my engine...and when i step onto my clutch the sound dissappears..when i went to the mechanic, he told me its because my gear box and he told me not to worry...

what can i do about my gearbox? is there any part inside the gear box in particular that i need to change??