What does car carbon deposit include?

[KadenMarie]

Car carbon deposits include valve carbon deposits, combustion chamber carbon deposits and intake pipe carbon deposits. Carbon deposits are harmful to the engine and need to be prevented and removed in time. The hazards of car carbon deposits: reduce the intake channel, reduce the charging coefficient, cause the cylinder pressure to increase, delay the ignition time, and lead to the decline of engine power. Methods to prevent carbon deposits: 1. Clean the intake system regularly; 2. Avoid long-term idling and low-speed gear shifting; 3. Avoid using inferior oil; 4. Add gasoline detergent to gasoline; 5. If the vehicle runs at low speed for too long, step on the accelerator several times in the neutral position; 6. After high-speed driving or climbing, idle the engine before turning it off.

[OKyle]

I previously encountered carbon deposit issues in my car, simply put, it's the accumulation of carbon residue and grime inside the engine. This mainly includes intake valve carbon deposits, where the air passage gets blocked, causing the car to shake like it's gasping for breath during startup; fuel injector carbon deposits, leading to poor fuel injection directly resulting in higher fuel consumption and lack of power; combustion chamber carbon deposits, where carbon residue from internal combustion accumulates affecting ignition; throttle body carbon deposits, making the throttle control point dirty and causing sluggish acceleration; spark plug carbon deposits, weakening the spark and reducing power. These issues tend to worsen with short-distance driving or low-quality gasoline. I regularly add professional cleaning agents to handle it, avoiding major overhauls. Long-term carbon deposits can also affect other components, such as causing oxygen sensor failure, making it impossible to pass environmental tests, so early inspection brings peace of mind.

[DelGenevieve]

From the perspective of car owner experience, carbon deposits affect several key components. The primary concern is injector carbon buildup, which causes inaccurate fuel spraying and disrupts the air-fuel mixture. Intake manifold carbon deposits obstruct airflow; piston crown carbon buildup increases compression ratio in the combustion chamber; while EGR valve carbon accumulation impacts the exhaust gas recirculation system. Throttle body carbon deposits restrict initial acceleration. These mainly form due to engine temperature fluctuations or aged engine oil, manifesting as soaring fuel consumption and jerky driving. I use higher-octane gasoline to reduce carbon deposition and perform cleaning every 5,000 kilometers, which keeps the engine running much smoother. If neglected, spreading carbon deposits may also clog the catalytic converter, doubling repair costs—routine maintenance can help avoid major pitfalls.

[AliviaLee]

Common areas for carbon buildup include carbon deposits in the intake system, such as throttle body and passage blockages; carbon buildup in the fuel injection area, leading to poor fuel atomization; carbon deposits in the combustion chamber, accumulating residual carbon residue; carbon buildup on the spark plug tips affecting ignition; and carbon deposits on the oxygen sensor misleading air-fuel ratio control. These issues can cause unstable idling or excessive emissions. I recommend cleaning them once when changing the engine oil to prevent carbon buildup from spreading.