What happens if a car is filled with low-quality fuel?
2 Answers
After filling a car with low-quality fuel, the power will decrease, the driving range will become shorter, and carbon deposits inside the engine will increase. A more noticeable phenomenon is the accumulation of engine carbon deposits. The increase in carbon deposits may not be visible from the outside, but when inspecting the engine interior with an endoscope after frequent use of low-quality gasoline, a significant amount of black carbon deposits can be observed. The quality of gasoline greatly affects the car's performance. Gasoline is the heart of a car, and poor-quality fuel can impact the vehicle's acceleration and cause damage to the engine, potentially requiring disassembly for repairs. The solution includes measuring cylinder pressure. If the cylinder pressure is normal, the cylinder head can be removed for cleaning, the remaining fuel in the tank can be completely drained, high-quality gasoline can be refilled, and components such as the throttle body, fuel injectors, combustion chamber can be cleaned, along with replacing the fuel filter and fuel pump.
I once refueled at a no-name gas station, and the car drove like an old ox pulling a broken cart. The engine shook violently, the power was sluggish and couldn't climb hills, and acceleration was as slow as crawling. After driving a few dozen kilometers, I felt something was wrong - black smoke was coming out of the exhaust pipe causing serious pollution. At the repair shop, they found too many impurities in the fuel causing incomplete combustion, and carbon deposits had clogged the fuel injectors. It cost me several hundred to clean. The mechanic said long-term use could damage the fuel pump and oxygen sensors, leading to even more expensive repairs. Since then, I only choose major gas stations to ensure clean fuel, protect engine lifespan, and have peace of mind.
