What is the lifespan of the Yushuai S350 diesel engine?
2 Answers
The lifespan of the Yushuai S350 diesel engine is approximately 6 years. The following signs indicate that the engine requires a major overhaul: 1. Cylinder pressure difference: The cylinder compression pressure should meet the original design specifications. Use a tachometer and cylinder pressure gauge for inspection. If it does not meet the requirements, it is considered unqualified. The pressure difference between cylinders: The difference between each cylinder's pressure and the average pressure of all cylinders should not exceed 8%. Measure with a tachometer, cylinder pressure gauge, or engine diagnostic analyzer (engines that do not meet the standard cylinder pressure difference requirements are unqualified.) When the engine cylinder pressure is below the standard value, there will be severe black smoke emission. 2. Large idle speed fluctuation: The engine should run stably at idle speed, and the speed should comply with the original design specifications. The speed fluctuation should not exceed 50 r/min. Conduct a running test with a tachometer or measure with an engine diagnostic analyzer. 3. Low power: The engine's maximum power should not be less than 90% of the originally designed rated value. Measure with a dynamometer according to relevant regulations.
My Yusheng S350 diesel version has already run 280,000 kilometers, and the engine still operates smoothly. This vehicle is quite durable to use, as diesel engines are inherently more robust than gasoline engines. As long as you're not hauling heavy loads or driving on rough roads every day, running 300,000 to 400,000 kilometers shouldn't be a problem. The key is to maintain it on schedule: change the engine oil and oil filter every 10,000 kilometers, and clean the air filter every 30,000 kilometers. I know several friends in the transportation business whose Yusheng S350s have all exceeded 500,000 kilometers, with one guy's vehicle never even having its engine opened up. However, diesel quality is something to watch out for – using too much low-quality diesel from small gas stations can cause carbon buildup and shorten the lifespan of the fuel injectors.
