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What to Do When Your Engine Starts Knocking

What to Do When Your Engine Starts Knocking | Super Service of Aliso Viejo

Have you heard a knocking sound under the hood of your car while driving? We'll explore the causes of engine knocks and other strange noises from under the hood. You'll also learn how to address them.

Engine Knocks and Strange Noises

Your engine is a complex machine comprising numerous moving parts working together harmoniously to propel your vehicle forward. When one of these components malfunctions or becomes worn, it can manifest as an unusual noise from under the hood. 

Engine knocks, in particular, are a common culprit, typically indicating issues such as improper fuel combustion, worn bearings, or insufficient lubrication. Depending on the severity of the problem, these knocks can range from subtle tapping sounds to loud, persistent banging.

Common Causes of Engine Knocking and Other Noises

Engine knocks and strange noises under the hood can stem from various issues, each requiring its unique solution. Some of the most common causes include:

  • Detonation or Pre-Ignition: This occurs when the air-fuel mixture ignites prematurely in the combustion chamber, resulting in a sharp knocking or pinging sound.
  • Worn Engine Bearings: As engine bearings wear down over time, they can produce a persistent knocking noise as they fail to provide adequate support for moving engine components.
  • Low Oil Pressure:Insufficient lubrication can lead to metal-on-metal contact within the engine, resulting in loud knocking or tapping sounds.
  • Faulty Fuel Injectors: Malfunctioning fuel injectors can cause irregular fuel delivery, resulting in erratic engine behavior and unusual noises.

Addressing Engine Sounds

If you're experiencing engine knocks or strange noises under the hood, it's important to address the issue promptly to prevent further damage and ensure your vehicle's continued reliability. Here are some steps you can take to troubleshoot the problem

  • Listen Carefully: Pay close attention to the type and frequency of the noise, as well as any accompanying symptoms such as decreased performance or increased fuel consumption.
  • Check Fluid Levels: Ensure that your engine oil, coolant, and other vital fluids are at the proper levels, as low fluid levels can contribute to engine knocks and noises.
  • Inspect Engine Components: Take a look under the hood for any visible signs of damage or wear, paying particular attention to the belts, pulleys, and engine mounts.
  • Consult a Professional: If you're unable to identify the source of the problem or if the noise persists despite your efforts, it's best to seek the expertise of a qualified mechanic who can diagnose and repair the issue.

Ready to put an end to those mysterious engine knocks and weird noises? Trust the Super Service of Aliso Viejo experts to diagnose and fix the issue with precision and care. Schedule your service appointment today and enjoy a quieter, smoother ride in no time.