How many kilometers does Jinlong bus diesel vehicle need to be maintained? When it is cold, vehicles begin to emit blue smoke. I won't sit when the car is hot. Why? Please be more detailed, thank you

How many kilometers does Jinlong bus diesel vehicle need to be maintained? When it is cold, vehicles begin to emit blue smoke. I won't sit when the car is hot. Why? Please be more detailed, thank you master. I don't know how old your car is. If it is a new car, it is basically not well run-in, and this situation should disappear after running-in. If it is a classic car, this situation is mostly caused by the wear of the valve oil seal. When the car is cold, because the rubber of the valve oil seal expands and hardens when heated, the engine oil with a large gap between the oil seal and the valve stem enters the combustion chamber, and blue smoke is emitted from the cold car. After the car is hot, the oil seal is soft, and the gap between the oil seal and the valve stem is small, so it is normal that the oil cannot enter. Another reason is poor atomization and insufficient combustion of the fuel injector. Of course, there are piston ring wear and supercharger oil leakage. Of course, according to your situation, whatever the reason, it is still in its infancy. As long as the car is strong enough and the oil is not too short, it is easy to start, so you can leave it alone for the time being. I hope it helps you.

Oh, yes, one more question. How many kilometers should it be maintained? Your vehicle description should be available. But it should be adjusted according to the actual use environment.