What Causes Powertrain Failure?

[OMiguel]

When pressing the accelerator, you may notice insignificant acceleration and insufficient power. This condition most commonly occurs when the engine is overheated or overcooled, or when there is a lack of engine oil. Below are detailed explanations: 1. Power reduction: While driving, you may distinctly feel that the engine's acceleration is not significant when stepping on the accelerator, accompanied by a noticeable drop in power and audible noises. Possible causes include the engine being too cold or too hot, or lacking oil. Generally, when these symptoms appear, potential issues should be considered from aspects such as ignition wires, fuel filters, fuel pumps, air filters, gasoline, spark plugs, and carburetors. First, check if the air filter needs replacement, if the spark plugs have reached the end of their service life, if the ignition coil is damaged, or if there is excessive impurity in the gasoline. The fuel pump should also be inspected. 2. Deceleration or acceleration: The engine may emit a whirring sound, which changes with the engine's RPM. Possible reasons include insufficient power steering fluid—refill if necessary; potential damage to the generator's bearings; or similar noises caused by malfunctions in the water pump or power steering pump.