What is the best solution for SX4 engine noise?
2 Answers
Tighten or adjust the screws of the engine underguard. The engine mount cushions support the engine and need replacement when aged. Accessory belts such as the power steering belt and alternator belt may cause noise if worn, loose, or overly tight—replace or adjust tension accordingly. Bearing noise typically produces a rhythmic "humming" sound; components like the engine tensioner pulley, idler pulley, or alternator may require part replacement for resolution. Excessive carbon buildup inside the engine or use of substandard fuel can be addressed by cleaning carbon deposits and switching to proper fuel.
I've had similar issues with engine noise in my old car. The constant buzzing sound while driving in the city was really annoying. After several attempts, I found the best solution is to address the root cause. First, check the oil quality and level - old oil loses its lubricating effectiveness and increases noise, so try switching to new synthetic oil. Also, aging ignition system components like spark plugs can cause abnormal sounds - don't underestimate these parts. Regular maintenance is key, such as a full inspection every 5,000 km. If you find loose engine mounts, tightening or replacing them can reduce vibration noise. Don't ignore belt tension either - squealing from loose belts is unbearable. From a safety perspective, excessive noise distracts drivers and increases accident risks, so it's best to address it promptly.
