What are the causes of black smoke from a car?

1 Answers
Eddie
07/24/25 12:41am
Car emitting black smoke is caused by: 1. Poor spark plug performance or faulty ignition coil; 2. Poor fuel quality; 3. Malfunction in the ignition system; 4. Clogged air filter causing insufficient oxygen supply to the engine leading to incomplete combustion; 5. Insufficient cylinder pressure; 6. Engine temperature too low; 7. Improper carburetor adjustment; 8. Prolonged overspeeding or engine overload. Solutions for car emitting black smoke: 1. Clean the air filter; 2. Check the working condition of spark plugs or ignition coils; 3. Replace with high-quality fuel; 4. Replace the engine cylinder; 5. Avoid prolonged overspeeding.
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