What Causes a Car to Emit Black Smoke While Driving?

[StValentina]

Car emitting black smoke while driving is caused by: 1. Use of low-quality fuel; 2. Clogged air filter, resulting in an overly rich air-fuel mixture and insufficient oxygen supply to the engine, leading to incomplete combustion; 3. Spark plug leakage, weak high voltage, or poor sparking; 4. Poor driving habits during acceleration, insufficient cylinder pressure, or excessively low engine temperature. Solutions for a car emitting black smoke while driving include: 1. Repair or replace relevant components such as the air filter, fuel injector, valve seals, cylinder and piston assembly, and oxygen sensor; 2. Clean relevant components to prevent clogging, such as the air filter and fuel injector; 3. Change driving habits, as frequently flooring the accelerator will worsen and increase the occurrence of issues like black smoke emission.