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What are the reasons for the high fuel consumption of the Sylphy?

1 Answers

LeahLee

07/30/25 8:38am

Regarding the reasons and solutions for the high fuel consumption of the Sylphy, the following points are provided: 1. Engine carbon deposits: A significant buildup of carbon deposits in the engine over a short period can lead to higher fuel consumption. Solution: Add a certain amount of cleaning agent when refueling. If there is excessive carbon buildup in the engine, it is necessary to visit a 4S shop or a repair shop to clean the carbon deposits inside the engine. 2. Oxygen sensor failure: The oxygen sensor primarily monitors the air-fuel ratio in the engine. If it fails, it can cause an imbalance in the engine's air-fuel ratio, inevitably leading to abnormally high fuel consumption. After the oxygen sensor fails, the vehicle will emit darker-colored exhaust from the tailpipe while driving. Solution: Replace the oxygen sensor promptly.

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