What are the reasons for sluggish car acceleration and abnormal engine noises?
2 Answers
Car sluggish acceleration and abnormal engine noises are caused by excessive engine carbon deposits or deteriorated engine oil. Excessive engine carbon deposits: Engines accumulate carbon deposits over prolonged use. If carbon deposits build up on the piston crowns, they increase the engine's compression ratio, leading to knocking during operation and causing abnormal noises. Vehicle owners should regularly clean carbon deposits. Deteriorated engine oil: Engine oil serves functions of lubrication, cleaning, sealing, heat dissipation, cushioning, and rust prevention in the engine. If engine oil is not changed for an extended period, the operating resistance inside the engine increases, accelerating engine wear. During acceleration, the engine noise becomes significantly louder. Owners should regularly change engine oil, ensuring complete drainage of old oil before adding new oil. Otherwise, old oil can contaminate new oil, reducing its lubricating performance.
I feel that the car's acceleration is sluggish and accompanied by abnormal engine noise, which could be caused by various issues. Based on my years of driving experience, this is a common occurrence. The most frequent cause is problems with the ignition system, such as worn-out spark plugs or faulty ignition coils, which can lead to insufficient power output and abnormal engine sounds. Secondly, fuel system issues like clogged fuel injectors or a failing fuel pump can also make acceleration difficult and produce unusual noises. Additionally, mechanical wear, such as a loose timing belt or damaged valve mechanism, can be major culprits. I recommend starting with simple checks, like verifying the engine oil level—if it's low, top it up promptly and consider replacing the air filter. If the problem persists, it's best to visit a repair shop and have a technician use diagnostic tools to identify the issue. Don't delay, as it could worsen and affect safety. Regular maintenance can prevent these problems, such as inspecting key components every 20,000 kilometers.
