Why Did The Fuel Consumption Increase After Changing The Spark Plug?

In the matter of refueling, the Chinese have always had a mysterious cost calculation method. Some novice drivers always add 200 yuan every time they refuel. The old drivers know that it is definitely wrong to add more fuel. It will not only waste fuel, but also affect the car to a certain extent. The average fuel consumption displayed on the instrument is not accurate for some cars and can only be used as a rough fuel consumption reference. With the above refueling habits, we can clearly feel the changes in the fuel consumption of the car. Usually, when the fuel consumption rises, we often do some maintenance. The common ones are to clean the oil circuit and replace the spark plug. I have encountered many car owners who reported that after doing these two projects, why did the fuel consumption not decrease but increase instead?
Let me talk about the impact of adding two hundred each time to the car. We all know that in addition to being used for combustion during engine operation, gasoline also has the function of cooling the oil pump. If the oil volume is below the level of the induction line for a long time, the oil pump will easily burn out. Well, once you enter a 4S store, it costs a few hundred yuan, which is not enough to save your gas money for half a year. It is not good to add too little, and it is not good to add too much. Especially now that it is hot and hot, it is easy to overflow a tank of oil when it is full. If there is an accidental collision and a spark is wiped out, it will be cool. So the correct way is to add three-quarters.
Let me talk about the spark plug problem first. If you replace the spark plug with the same model as the original car, the increase in fuel consumption has nothing to do with the spark plug. If the fuel consumption increases, you should not look for the spark plug problem. A wrong spark plug will lead to insufficient ignition energy and incomplete combustion, which will lead to increased fuel consumption. If it is a spark plug problem, it will be accompanied by engine vibration, the engine vibration will be greater than before, and the power will also drop.
Once excessive carbon deposits accumulate, it will lead to problems such as reduced vehicle performance, insufficient power, engine vibration, sudden increase in fuel consumption, and excessive exhaust gas. Carbon deposition can be said to be unavoidable, as long as the car starts to drive, carbon deposition has already been formed, it is only the difference between more and less.
How can the spark plug be changed wrong? It is divided into many types, such as: ordinary resistor nickel-clad copper, platinum, iridium, double platinum, double iridium needle, etc., and the heat dissipation performance of each material is different. The electrode gap is also different, the length of the spark plug is also different, the calorific value is different, and the resistance value is different. The spark plug must be matched with the engine of the model. Some spark plugs are the same size as the one removed from the original car, but they are not necessarily the standard matching model. Although some of them can be used differently, the effect is unknown. It may be better, or it may cause insufficient combustion and impurities to fall on the spark plug.
Automotive oil circuits usually include two types: engine oil circuits and gasoline circuits. The oil circuit refers to the way inside the engine where the oil runs through the oil pump. The gasoline road is also called the fuel system, which refers to the pipeline between the fuel tank of the car and the combustion chamber of the engine. The oil circuit mentioned here refers to the latter, which is the fuel system of the car. It includes: fuel filter, gasoline pump, fuel pressure regulating valve, gasoline pipeline, carbon tank, fuel injector. There are two possibilities for the increase in fuel consumption after cleaning, one is not cleaned thoroughly, and the other is normal. In the past, some cars had their oil circuit and air intake cleaned. After cleaning, they turned off the engine and installed other things, and then they couldn't start the car again. For example, there was uniform carbon deposits on the entire circle of the valve, and it could be sealed very tightly. After cleaning, half of the circles fell off, and half of the circles were not washed off. The situation of shaking on fire. Therefore, if it is not cleaned thoroughly, the engine will also vibrate, the operation will not be stable, and the jitter will be greater than before it was not washed.
If there is no vibration and the engine runs smoothly, only the fuel consumption increases, which is a normal phenomenon. As long as the engine computer adapts to the environment without carbon deposits after driving a few hundred kilometers, the fuel consumption will return to normal. Why is this? Because there is a fuel correction time, assuming that the fuel injector has carbon deposits, the amount of gasoline injected at the same time will be less. The engine computer will make an adjustment to the fuel injection time, so that the fuel injection time is longer, and the fuel injection volume can meet the requirements. If the carbon deposit is removed at this time, the engine computer has not had time to adjust the fuel injection time to normal, and there will be excessive fuel injection, resulting in increased fuel consumption. After driving for a certain distance, the computer will automatically adjust to normal, and the fuel consumption will also drop. The mileage is about a few hundred kilometers, which is almost the distance of one tank of fuel, and it can be restored by adding a second tank of fuel.