If your car is making strange noises, it's normal to feel worried. Engine trouble can be expensive, but not every issue requires a costly fix. It's important to identify the sound so you can begin diagnosing it (or so you can explain the sound to a mechanic). Below, we've listed some of the most common engine noises that we hear at the Gastonia Nissan service center and their causes. If your car is making any of these sounds, schedule Nissan service in Gastonia with our team and rest easy. We'll take care of your vehicle and get you back on the road safely.

Here are some of the sounds that you may have heard and how they can be fixed.

If you hear a knocking sound, your engine may have a problem. In many cases, this sound will get worse whenever you speed up the car. There could  be a problem with the ignition because of a damaged spark plug, or you might have low oil pressure. Knocking can also result from internal issues in the engine components, which can lead to total engine failure. For this reason, don't ignore engine knocking - get it check out as soon as possible. 

Hissing can result from a leaking vacuum or an overheated engine. If you hear these sounds, bring your car in as soon as you can. An overheated engine is quite dangerous and should not be overlooked. It can lead to dangerous problems in the future and can be harmful to the car's longevity. 

This is another common (but dangerous) sound that could indicate a problem with the transmission. You might have low transmission fluid or an issue with the clutch or gears. Whenever you hear this kind of sound, get it fixed immediately because it can cause significant problems to the drivetrain in the future.

Though less common, a popping sound is definitely something to investigate. It's likely caused by an imbalance in the mixture of air and fuel in your engine. This imbalance comes from a backed-up fuel injector or a dirty air filter. You might also have issues with your spark plugs.

A squealing sound might be an issue with your engine's serpentine belt. While this isn't an engine sound, it's important to mention squealing can also come from brake issues. Either the rotors and/or pads are wearing out, they aren't lubricated, or you have debris or rust on the brakes. Visit us for a brake check-up soon if you're hearing squealing when you slow or stop your car.