What are the symptoms of engine knocking?
2 Answers
The following are the symptoms of engine knocking: 1. When slight knocking occurs, the engine will produce crisp and discontinuous metal knocking sounds; 2. In cases of severe and continuous knocking, the engine will emit continuous metal knocking sounds, accompanied by a noticeable decrease in engine power. Here are some precautions to prevent engine knocking: 1. First, use fuel with the correct octane rating. Using fuel with too low an octane rating may cause carbon buildup and knocking, but using fuel with too high an octane rating will not alleviate knocking. 2. Drive as standardly as possible, adopting correct driving habits to prevent excessive carbon buildup in the engine. Regularly inspect the engine's ignition system and clean carbon deposits from the cylinders periodically. Especially when the engine emits abnormal noises under specific conditions, immediate inspection is essential to ensure safety.
I've experienced knocking issues before, and the most obvious symptom was the engine making metallic knocking sounds during hard acceleration, as if someone was hitting the cylinder block with a wrench. It was especially noticeable on uphill sections - the moment I pressed the accelerator harder, it would start making clicking noises. The car's power output also significantly decreased, feeling like the engine was struggling to deliver its full potential. Sometimes black smoke would even come out of the exhaust pipe, and fuel consumption suddenly skyrocketed. Once during summer when climbing a hill with the AC on, the tachometer needle started jumping wildly. Never ignore such problems - aside from damaging the engine, it could potentially harm piston rings and cylinder walls, leading to expensive repairs.
