As a heavy mechanical equipment, it is normal for Carter excavators to produce a certain amount of exhaust gas during operation. To understand the normal range of Carter excavator exhaust gases, it is important to first identify several key factors: engine model, workload, fuel efficiency, and emission standards. In line with the environmental protection emission standards stipulated by the state, the Carter excavator should ensure that the exhaust gas emissions are maintained at a low and stable level through an efficient combustion system and advanced exhaust gas treatment technology. For Carter excavator users, regular equipment maintenance, such as changing the oil, air filter, and checking that the exhaust pipe is not blocked or damaged, is an important measure to ensure that the exhaust emissions are normal. In addition, the use of high-quality fuel that matches the equipment can also effectively control exhaust emissions. Monitoring the color and odor of the excavator's exhaust emissions under full and partial load is also an intuitive way to determine whether it is normal. Normally, a properly functioning Carter excavator exhaust should be nearly colorless or bluish (water vapor), with black smoke, white smoke or an unusual odor that may indicate inadequate combustion or other mechanical failure. In general, there is no fixed value for the question of how much exhaust gas emissions from Carter excavators are normal, mainly based on the performance of the equipment itself, maintenance and environmental protection regulations. Therefore, it is recommended that users refer to the official maintenance manual and combine the test results of professional maintenance personnel to judge.