Is the unqualified exhaust gas related to the throttle?

The reason why the exhaust gas of automobile annual inspection is unqualified is the problem of vehicle itself or improper use of oil.

Unqualified exhaust gas mainly exists in some old models. For example, if these cars are driven for a long time, there will be problems such as spark plug aging, engine carbon deposition, throttle carbon deposition, etc. These are the reasons that lead to unqualified automobile exhaust detection.

Therefore, the unqualified exhaust gas has nothing to do with the throttle.