What needs to be cleaned when fuel consumption is high?
2 Answers
If your car's fuel consumption increases, cleaning the throttle body may solve the problem, as carbon deposits might have accumulated inside. The reasons for increased fuel consumption are as follows: 1. Poor ignition: Poor ignition, excessive spark plug gap, insufficient ignition coil energy; excessive engine carbon deposits, where some of the injected gasoline is absorbed by the carbon deposits; 2. Sensor failure: Sensor failure, such as a faulty coolant temperature sensor, can cause the engine to mistakenly believe it is still in a cold state, continuously sending fuel injection signals, leading to high fuel consumption; 3. Oxygen sensor failure: Oxygen sensor failure can cause fuel correction to fail, and the computer will continuously send fuel injection signals; a faulty air flow meter can result in incorrect intake data.
Last time my fuel consumption soared to 11 liters per 100 kilometers, so I specifically checked the manual. The throttle body is the most critical part to clean - when clogged with dust, it's like a person gasping for breath, and pressing the accelerator harder just wastes fuel. The fuel injectors also need special attention; too much gum deposits make them spray fuel wildly like a machine gun. If the spark plugs get coated with carbon, even the sparks struggle during ignition - they need to be removed and soaked in cleaner. My car has been stuck in city traffic for seven years, and the mechanic said the catalytic converter in the exhaust pipe also needs flushing - when clogged, it's like running with a mask on. Finally, don't forget the oxygen sensor - when this little thing gets dirty, the ECU goes haywire and adds fuel randomly.
