Star cross throttle valve

1. The vehicle mixer is too thick, and the combustion is incomplete, and the exhaust gas emitted exceeds the standard. Need to check the air filter element, throttle sensor and oxygen sensor; When driving in the city, the front and rear cars are very close. When you circulate outside, the outside air will come from your car. Please observe whether there is a car ahead and whether there is the smell of tail gas. If yes, turn on the internal circulation and turn on the air conditioning fan to speed up the airflow.