How to Solve Incomplete Combustion of Car Gasoline?

2 Answers
KylieAnn
07/24/25 3:18am
Solutions for incomplete combustion of car gasoline: 1. Long-term low engine speed can cause carbon deposits in certain areas, leading to incomplete combustion and increased fuel consumption: Go to a repair shop to clean the engine, transmission, and fuel injectors; 2. The exhaust gas recirculation system is normally closed during regular driving. If it malfunctions and opens while driving, it introduces exhaust gas into the cylinders, causing oxygen deficiency in the combustion chamber and incomplete combustion: Visit a repair shop to fix the exhaust gas recirculation system; 3. Engine misfire, where one of the six combustion cylinders in an engine is not working or working poorly, resulting in incomplete combustion and noticeable shaking while driving: Go to an auto repair shop to fix the faulty combustion cylinder; 4. If poor-quality fuel is used regularly, it can also cause incomplete combustion: Use higher-quality fuel.
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AubreeFitz
08/10/25 10:54pm
I've been driving for over a decade and have encountered incomplete fuel combustion several times. Each time, black smoke came out of the exhaust pipe, the car felt sluggish, and fuel consumption was extremely high. This is usually due to aging spark plugs or a clogged air filter. If the spark plugs are faulty, the ignition isn't proper, and the fuel doesn't burn cleanly. I make it a habit to check regularly—look at the color of the spark plugs; if they turn black or show wear, replacing them costs just a few dozen bucks. As for the air filter, just take it out and inspect it. If it's dusty or clogged, cleaning or replacing it is super easy. Always use gasoline from reputable gas stations—avoid small, shady ones—as quality fuel ensures better combustion efficiency. I also recommend using fuel additives to clean the fuel system; using them twice a year can reduce carbon buildup. If left untreated, the engine will accumulate more carbon deposits, accelerate wear, and lead to exorbitant repair costs. So, timely maintenance is common sense—it saves big money and protects your car.
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