How serious is the engine knocking sound issue?
2 Answers
This is a very serious issue that requires immediate inspection at a repair facility. Below is relevant information about engine knocking: Definition: Engine knocking refers to a phenomenon where metallic knocking sounds occur when the pressure rise rate inside the cylinder is too high. Engine knocking is categorized into combustion knocking and mechanical knocking. Sharp metallic knocking sounds near top dead center caused by combustion issues are called combustion knocking or hot knocking. Dull heavy knocking or friction sounds caused by abnormal clearances between moving parts and bearings are called mechanical knocking or cold knocking. Causes: Poor lubrication conditions, low oil pressure or excessively low oil viscosity, inadequate splash lubrication on cylinder walls preventing normal oil film formation between piston and cylinder wall, resulting in direct contact between piston and cylinder causing knocking.
Engine knocking is not something to be taken lightly. As someone who loves tinkering with cars, I've encountered similar issues before, usually caused by fuel problems or incorrect ignition timing. If it's just occasional light knocking, it might be due to poor gasoline quality or excessive carbon buildup - using higher-octane fuel or cleaning the throttle body can help, and the problem isn't too serious. However, if the knocking becomes progressively louder or more noticeable during acceleration, it's likely due to piston ring damage or severe connecting rod bearing wear. Continuing to drive under these circumstances carries significant risks - at best, you'll see a dramatic increase in fuel consumption, and at worst, complete engine failure, which would be extremely costly to repair. My advice is to stop the vehicle immediately upon hearing knocking sounds and inspect the fuel system and ignition system. Don't push your luck - it's best to take it to a professional repair shop for a thorough diagnosis. Addressing small issues promptly prevents them from becoming major problems, which is crucial for driving safety.
