How to Deal with Black Smoke from China III Diesel Vehicles?

[StSerenity]

China III diesel vehicle black smoke causes and solutions: 1. Fuel injection pump failure: Severe wear of the fuel injection pump plunger pair causes slow rise in fuel supply pressure, prolonging the fuel injection process and affecting fuel atomization. Simultaneously, delayed injection timing results in incomplete combustion by the start of the exhaust stroke, a common cause of black smoke. Solution: Timely calibration and repair of the fuel injection pump. 2. Insufficient air intake: Excessive dust and particulate matter in the air can clog the air filter element, increasing intake resistance and causing insufficient air supply. Solution: For dry air filters, use high-pressure air to blow out dust and debris; for wet air filters, replace the oil for cleaning or directly replace the air filter. 3. Low fuel quality: Incorrect fuel grade, improper viscosity, or poor fuel quality can make ignition difficult, causing black smoke and carbon deposits in the combustion chamber. Solution: Use appropriate, certified fuel; cleaning the fuel system can alleviate the black smoke issue.