What are the symptoms of using poor-quality gasoline?

[VanRonan]

Using poor-quality gasoline can lead to the following symptoms: 1. It does not meet the compression ratio requirements of the vehicle, resulting in incomplete combustion of gasoline, which can cause increased engine knocking, loss of acceleration power, higher fuel consumption, and increased carbon deposits in the cylinders and injectors. Continuous knocking may even damage the piston rings, break the connecting rods, and significantly shorten the engine's lifespan. 2. It can cause oxygen sensor poisoning, leading to clogged exhaust pipes and catalytic converters, which reduces engine power. 3. It may cause deposits in the intake system or sticking of the intake valves. If the gasoline's gum content is too high, the intake system will develop issues.

[McWalker]

Last time I accidentally filled up with a tank of low-quality gasoline, and my car immediately started acting up. After starting, the engine began shaking violently, and it felt powerless when accelerating—I had to press the gas pedal hard even when going uphill. After driving for a while, the check engine light suddenly came on, indicating a potential fault. Fuel consumption also skyrocketed, using twice as much gas as usual. When I stopped the car, I could smell a pungent exhaust odor, as if the fuel wasn’t burning completely. The mechanic said the bad fuel might contain impurities or have too low an octane rating, causing severe knocking and carbon buildup. He advised me to quickly refill with a tank of high-octane gasoline to flush the system and to regularly visit reputable gas stations to avoid long-term damage to the fuel injectors.

[LaGabriela]

As a car enthusiast, I once tried low-quality fuel during a road trip, and the entire car's performance took a nosedive. The power output became sluggish, and acceleration was as slow as a snail crawling. Soon, the engine noise became alarmingly loud, with knocking sounds that made me nervous. The dashboard also lit up with a warning light, indicating excessive emissions. To make matters worse, after just a few minutes of short-distance driving, the idle became unstable, and the car body shook noticeably. Research revealed that the poor-quality fuel had high water content or insufficient additives, clogging the oxygen sensor. I immediately changed the oil and ran two tanks of high-quality fuel before the car returned to normal. I recommend everyone choose certified gas stations to avoid such troubles.

[MacWalter]

I had just gotten my new car when I filled up with some bad fuel, and the driving experience deteriorated instantly. The engine started shaking inexplicably, especially at red lights where the seat vibrations became unbearable. Acceleration was sluggish, and highway performance was noticeably weaker. Soon after, warning lights flashed on the dashboard, indicating potential issues. The mechanic said impurities in the fuel caused carbon buildup, affecting the spark plugs. Scared, I immediately changed the oil for safety and made it a habit to only refuel at trusted gas stations.