What are the symptoms of poor gasoline quality?

[GraceRose]

Symptoms of poor gasoline quality include: insufficient vehicle power, engine carbon buildup, severe shaking, stalling, fuel pump failure, inability to start the vehicle, EPC light on the dashboard, engine malfunction light illumination, excessive exhaust emissions, etc. Long-term use of inferior gasoline will severely damage the engine, result in incomplete fuel combustion, and lead to consequences such as reduced engine power, increased fuel consumption, and increased carbon deposits in the fuel injectors. Gasoline is produced by refining various gasoline components obtained from petroleum refining, such as straight-run gasoline components, catalytic cracking gasoline components, and catalytic reforming gasoline components, and then blending them with high-octane components. It is primarily used as fuel for spark-ignition internal combustion engines in automobiles.