Old paladin throttle matching

First, check whether the oil you added is qualified. Some small gas stations are unqualified, which may lead to engine jitter due to poor combustion. In addition, whether the engine matches the vehicle frame is also a possible factor of engine jitter. As for the pungent tail gas, I suggest you go to the service station to check it with their diagnostic instrument, and check whether the intake of the engine is synchronized with the oil supply through the computer board. The higher the oil intake, the smaller the oil intake. It may be that the engine oil is not fully burned at the beginning, which leads to fuel consumption, and the gasoline is not fully burned, which produces a pungent smell. The throttle body is also a part of the reason, because if there are foreign objects in the throttle body, or the air intake is not smooth due to aging, it may also cause the above problems.