Modern i30 winter fuel consumption 15 liter, please answer! ! !

Hello, my friend, the fuel consumption of this car is high. Under normal circumstances, in the winter of August 5th, when the computer detects the engine coolant temperature sensor, its fuel injection pulse width will increase appropriately, so the fuel consumption will increase. According to the fuel consumption of your car, it is 15 liter! It's really expensive! There is no specific maintenance file! Only the detection scheme! In this case, you need to use a computer to read some main sensor data streams of the engine, and you can analyze them according to the data streams! Engine coolant temperature sensor, throttle position signal! Fuel injection pulse width, engine cold and heat load! Mainly remember the throttle position signal, and then sit down and clean the throttle! Clean the nozzle, and then pay attention to see if the fuel injection pulse width decreases after cleaning! According to this idea, you can generally check the problem! Oh, by the way, is it closed-loop control when the engine is idling and the hot car is idling? ! Oxygen sensor signals also need attention! Understand? If there is something wrong with a friend's car, ask the mechanic. 4S shop professional technician, 10 minutes to solve.