What causes hesitation and lack of power during driving?
2 Answers
The main reasons for hesitation and inability to accelerate during driving include: dirty fuel; clogged fuel injectors; blocked fuel filter; faulty fuel pressure regulator; poor performance of electric fuel pump; throttle position sensor malfunction; ECU (Engine Control Unit) failure; insufficient cylinder pressure, etc. Solutions for hesitation during driving: Check the fuel pump in the fuel tank to see if it is working properly. This task is somewhat tedious, requiring the removal of the rear seat, opening the fuel tank, and taking out the fuel pump for inspection. It might be caused by excessive impurities in the fuel pump, preventing fuel from being drawn properly. The reason for strong hesitation after releasing the throttle is: For manual transmission cars, hesitation is often due to driving technique issues. Many beginners fail to shift gears correctly when decelerating, causing the car to jerk due to gear dragging. For automatic transmission cars, hesitation after releasing the throttle is likely due to transmission abnormalities. First, check if the transmission fluid is low or has deteriorated.
Speaking of this jerking issue, I really need to talk about it. Having been into cars for years, I often see problems with the ignition system. If the spark plugs are dirty or the ignition coils are aging, it can cause poor engine ignition, especially during acceleration. You press the gas pedal but get no response, and the car jerks forward intermittently, almost like it suddenly loses power. This could also be due to unstable contact in the high-voltage wiring, causing intermittent sparks and incomplete fuel combustion, which naturally affects power output. I suggest first checking if the spark plugs are worn—just remove them for cleaning or replacement, which is simple and straightforward. But if not fixed in time, it not only increases fuel consumption but can also lead to more serious failures. Remember to focus on ignition components during every 20,000-kilometer maintenance to ensure the engine runs smoothly.
