What is the reason for the car's weak acceleration?

1, the oil system is the place where cars often have problems. Blocked fuel nozzle, oil leakage from oil pipe, reduced power of gasoline pump and blocked gasoline filter will all lead to the car going uphill. The reason why the car feels weak is mainly because the engine oil is not enough when going uphill, the combustion efficiency drops, and the horsepower can not meet our requirements.

2. In addition, so is the air intake system. Besides oil, the engine needs air. 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.

3. Spark plugs are also the source of common faults. If the spark plug is not ignited properly, it may lead to the problem of weak acceleration.

4. If the car is stuffy, the steering wheel or the car body will shake obviously when the car stops, then it means that at least one cylinder of the car engine is not working properly or stalled. Under normal circumstances, a four-cylinder engine can still run without starting one cylinder, and with the increase of the number of cylinders, this symptom is more difficult to be detected.

5. If the air conditioner is turned on in summer, it will be difficult for a small-displacement car to accelerate, and the fuel consumption will increase obviously. This is because the compressor needs to be driven when the air conditioner works, and the power required when the compressor works is very large, and the engine has to bear such a large internal friction, so it is inevitable to feel slow when accelerating.