What are the symptoms of increased carbon deposits in a car?

1 Answers
MartinFitz
07/29/25 4:29pm
Symptoms of increased carbon deposits in a car include: 1. Difficulty starting; 2. Insufficient horsepower, unstable acceleration, and shaking; 3. Air-fuel ratio imbalance; 4. Failure to meet emission standards; 5. Reduced combustion efficiency. The causes of carbon deposits in cars are: 1. Long-term poor driving habits of the owner; 2. Mismatch between fuel grade and compression ratio; 3. Aging or damage to the engine carburetor; 4. Prolonged high-load driving; 5. Not replacing the air filter; 6. Inaccurate ignition timing or fuel supply timing; 7. Low engine temperature; 8. Poor sealing of valves and valve seats; 9. Prolonged engine idling. Carbon deposits are a carbonaceous substance produced by unsaturated olefins and gums in fuel under high-temperature conditions during engine operation.
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