1, you can do some simple checks yourself, such as whether you have added the wrong oil. Because you add low-grade gasoline, there may be a lack of acceleration, resulting in a decline in engine power and an increase in fuel consumption.
2, oil system, if the oil is insufficient for a long time, the power is insufficient, and the fuel consumption increases; In the worst case, the piston hits its door, causing mechanical damage to the relevant connector. In addition, the failure of gasoline pump and the blockage of fuel filter will also lead to the decrease of engine power.
3. The air intake system of the engine needs air besides engine oil. If the air filter, throttle and other parts are blocked or have problems, resulting in insufficient air intake, it will also lead to slow acceleration of the car and sudden frustration.
4. The ignition system can't be ignored. If the spark plug is poorly ignited, dripped or atomized, it will also affect the engine acceleration.
In addition, we can judge where the problem lies according to the symptoms accompanying the car, such as smoke from the exhaust pipe. If there is black smoke, there is something wrong with the combustion chamber, ignition system and valve. If the exhaust pipe emits blue smoke, it may be that the engine oil has gone to the combustion chamber, that is, burning engine oil.
Causes of automatic start failure of automatic transmission
It is normal that the automatic start is unstable. If you want to accelerate quickly when driving, you need to step on the accelerator deeply. At this time, the automatic gearbox will automatically downshift to increase the engine speed, and then upshift when the speed reaches a certain height. After the upshift, because the speed will drop obviously, there will be a more obvious sense of frustration.
This often happens in automatic transmission models with fewer gears, such as 4-speed automatic transmission models. After the automatic transmission vehicle starts, if you want to drive smoothly, you can lightly step on the accelerator at an appropriate time, and the transmission will automatically upshift. At this time, the sense of shifting is weak; If you want to maintain good acceleration performance, you need to step on the accelerator pedal deeply, and the automatic transmission will rise to a higher gear at a higher speed, at which time the shift frustration is obvious.