How to Solve the Problem of Black Smoke from Diesel Vehicles?

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The solutions for black smoke from diesel vehicles are: 1. Check, clean, or replace the air filter; 2. Clean the fuel system or add fuel cleaner; 3. Visit a 4S shop to detect and confirm the root cause of the fault, then replace the damaged parts; 4. Inspect and replace the fuel injector; 5. Check the pressure of the fuel injection pump and repair or replace it. The reasons for black smoke from diesel vehicles are: 1. Clogged air filter; 2. Poor fuel quality and carbon deposits; 3. Insufficient compression force; 4. Poor performance of the fuel injector; 5. Poor performance of the fuel injection pump. Diesel engines are divided into: 1. Spark-ignition engines: Gasoline engines inject gasoline into the intake pipe, mix it with air to form a combustible mixture, which then enters the cylinder and is ignited by the spark plug to expand and perform work; 2. Compression-ignition engines: Diesel engines directly inject diesel into the engine cylinder through the fuel injection pump and nozzle, where it mixes uniformly with the compressed air in the cylinder and self-ignites under high temperature and pressure to push the piston and perform work.