What’s That Sound Coming from My Vehicle’s Engine?

By Product Expert | Posted in Service, Tips and Tricks on Friday, September 20th, 2024 at 9:01 am
Check engine light

Understanding the Sounds Coming from Your Car’s Engine

Hearing unusual noises from your vehicle’s engine can be alarming. Whether it’s a faint ticking, a loud knocking, or a persistent squeal, each sound could indicate a different issue that needs attention. Understanding these noises can help you diagnose problems early and avoid costly repairs. Read this blog post by our team at Third Coast Auto Group in Austin, TX, to learn more.


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Unusual Engine Noises: Common Causes and Fixes

A ticking sound often points to low oil levels or an issue with the valve train. Low oil can cause metal components to rub against each other, leading to damage. Checking and topping off your oil can sometimes resolve the issue, but if the noise persists, it’s best to consult a mechanic.

Knocking noises are usually a sign of more severe engine problems. Detonation, often caused by incorrect fuel octane or timing issues, can create a knocking sound. It’s crucial to address this immediately, as continued knocking can damage pistons and other critical engine parts.

Engine of a vehicle
Technician checking a vehicle's engine

Squealing noises commonly originate from the belts, such as the serpentine or timing belt. A worn or loose belt may struggle to maintain proper tension, leading to a high-pitched squeal. Replacing the belt or adjusting the tension can usually fix this problem.

Rattling sounds may be due to loose components, such as heat shields, exhaust parts, or even the engine mounts. While some of these issues are minor, others could compromise your vehicle’s performance. Inspecting the engine bay for any visibly loose parts is a good starting point.


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Ignoring strange engine noises can lead to bigger problems down the road. Regular maintenance, such as oil changes, belt inspections, and fuel system checks, can prevent many of these sounds from developing. When in doubt, always seek professional advice to keep your engine running smoothly and your vehicle safe on the road. If you are looking to buy a well-maintained used car in Austin, TX, you must visit us at Third Coast Auto Group.