My old Bora opened the neutral valve on the hood and heard the sound of air leakage near the throttle. He went to the repair shop and said it was normal. He also said that if there is air leakage, you

My old Bora opened the neutral valve on the hood and heard the sound of air leakage near the throttle. He went to the repair shop and said it was normal. He also said that if there is air leakage, your idle speed will not be so stable. When you talk about air leakage or airflow noise, there is generally no stable idle speed. If there is air leakage before the throttle, it should be said that it has little effect. As long as the clamp is tightened to find the air leakage point, unfiltered air can be sucked in at most, which may cause unnecessary wear and tear to the cylinder and piston for a long time.