What is the reason for abnormal noise and lack of acceleration when accelerating in SWM X7?
3 Answers
The reasons for abnormal noise and lack of acceleration when accelerating include wear or impurities inside the fuel pump motor; damaged throttle body or excessive carbon and sludge buildup; poor lubrication of the accelerator pedal bearing; or damaged clutch release bearing, resulting in incomplete clutch disc separation. Solutions for abnormal noise when pressing the accelerator: Replace the fuel pump; clean the throttle body and replace the motor after disassembly; apply grease to lubricate the bearing; remove the clutch and replace the release bearing. The working principle of the accelerator is: When the accelerator pedal is pressed, it directly controls the throttle body. The throttle opening increases, allowing more air to enter the engine. At this point, the ECU commands the fuel injection system to inject more fuel, causing the engine speed to rise and the vehicle to accelerate.
I've driven a similar car, the SWM X7, which made strange noises when accelerating and couldn't pick up speed—really frustrating. Possible causes include: aging spark plugs leading to poor ignition, clogged fuel injection system affecting fuel supply efficiency, or a slipping transmission clutch preventing power delivery. Once I encountered this issue due to an exhaust system leak, hearing a harsh noise while the car felt sluggish as if being dragged. Regularly check the air filter when driving—if it's dirty, it can restrict airflow and easily trigger these problems. Get it checked at a repair shop promptly to avoid damaging other components, which could lead to increased fuel consumption and unsafe driving. If this issue occurs on the highway, pull over immediately—safety first. Simple maintenance can save you big money; don't wait until major repairs are needed to regret it.
From an analytical perspective, there are several common factors that may cause abnormal noises and acceleration issues when refueling the SWM X7: First, fuel system malfunctions such as insufficient fuel pump pressure or clogged injectors can lead to inadequate fuel supply. Second, ignition system problems like spark plug carbon buildup or aging coils may affect engine ignition efficiency. Third, transmission abnormalities such as worn clutch plates slipping and producing strange noises can result in power transmission failure. Fourth, exhaust system leaks or damaged mufflers may generate hissing or squeaking sounds. Fifth, faulty electronic sensors like misjudged throttle position sensors can misinterpret acceleration commands. Ignoring these issues will increase fuel consumption. It's recommended to first check basic circuits with a multimeter or directly visit a professional workshop for diagnosis. Although vehicles have redundant designs, neglecting minor problems can accumulate into major failures affecting overall performance. Regular maintenance can prevent such troubles.
