What Causes Diesel Engines to Emit Black Smoke?

[DelHadley]

Diesel engine emitting black smoke can be caused by: 1. Poor diesel quality: The performance indicators of the diesel used do not meet standard requirements, leading to incomplete combustion and black smoke; 2. Blocked air intake: A blocked air intake cannot provide sufficient air during diesel combustion, resulting in incomplete combustion and black smoke; 3. Insufficient compression: Inadequate compression fails to meet the required pressure for combustion, worsening combustion conditions and causing black smoke; 4. Changes in combustion environment: Long-term use of the diesel engine and other factors can alter the shape and volume of the combustion chamber, further reducing the quality of fuel-air mixture, preventing the formation of a good mixture, and leading to black smoke due to poor combustion conditions.