How to Solve the Problem of Black Smoke from China III Diesel Vehicles?
1 Answers
It is necessary to check whether the engine is malfunctioning. The following are the causes and solutions for black smoke from the engine: 1. Excessive dust and particulate matter in the air can clog the filter element, increasing intake resistance and causing insufficient air intake. For dry-type air filters, use high-pressure air to blow away dust and debris; for wet-type air filters, replace the oil and clean them. Alternatively, replace the air filter directly. If the fuel grade is incorrect, the viscosity is inappropriate, or the fuel quality is problematic, it may be difficult to ignite, causing the engine to emit black smoke and leading to carbon deposits in the combustion chamber. Using the appropriate standard fuel and cleaning the fuel system can alleviate the black smoke issue. 2. Severe wear of the fuel injection pump plunger pair causes a slow increase in fuel supply pressure, prolonging the fuel injection process and affecting fuel atomization. At the same time, the injection timing is delayed, resulting in incomplete fuel combustion by the start of the exhaust stroke. This is a common fault causing black smoke from the engine. Wear of the fuel injection pump plunger pair can also lead to uneven fuel supply among cylinders or excessive fuel supply in a single cylinder, causing unstable engine speed and intermittent black smoke.
