Every car comes with some metal parts in the exterior, and fibre in the interior. It is very common for these parts to start producing noises over years of use, largely because of vehicle usage.
Engine knocking sounds:
This is heard when you drive your car by changing gears or by acceleration. It is caused because the early ignition of the air-fuel mixture has not produced the minimum power at the right time. In this case, check your engine oil level. If you find any faults, take it to your nearest service centre. Sometimes proper tuning of the engine could fix this issue.
Pinging on cold start:
This noise is caused by the fuel mixture in the engine cylinder being ignited too early by the heat of compression. We can hear this noise during acceleration of the vehicle. As the engine gets older, it will start to ping more on cold start.
Tapping sound from the engine:
The tapping sound from the engine is due to the low oil level or loose components. You can check your oil level using the dipstick. When you rev, the engine tends to produce more tap or upper valve train noises.
Loud squealing noises come from the internal engine and is caused by the belts. In a car, there are multiple belts: one for power steering pulley and one for the AC compressor. The belts generally slip from the pulley because it’s worn out. This sound is louder when you start the engine cold and fades away as you accelerate.
This is one of the common engine noises heard frequently. This noise is caused by the driver when shifting the gears; because when you apply the gear with half clutch, then there will be a grinding noise. If you are doing so, avoid it because it can damage the entire engine system.
Check the oil level regularly; because in a car, noises arise primarily because of the low level of oil. The other common thing is a bad belt, which can cause squealing noises. If you find worn-out belts, it’s time to replace them.