What causes the high fuel consumption of the Cavalier?

[SanVera]

The reasons and solutions for the high fuel consumption of the Cavalier are as follows: 1. Engine carbon deposits: Excessive carbon deposits can lead to incomplete combustion of the air-fuel mixture, increasing fuel consumption. Therefore, it is necessary to regularly clean the engine carbon deposits, including: the intake tract, throttle valve, fuel injectors, and cylinder deposits. The solution is to clean the carbon deposits promptly. 2. Vehicle weight: Carrying excessively heavy items in the vehicle can cause fuel consumption to be about 2% higher than normal driving fuel consumption. The solution is to reduce the vehicle's weight when carrying too many items. 3. Clogged air filter: A clogged air filter restricts air intake, resulting in an overly rich air-fuel mixture or a clogged exhaust pipe. The solution is to replace the air filter in time. 4. Worn spark plugs: Worn spark plugs with excessively large electrode gaps can cause insufficient ignition, leading to incomplete combustion of the air-fuel mixture and increased fuel consumption. The solution is to replace the spark plugs promptly.