Nov 26, 2024
An engine overheating with the hood up. - Dann's Discount Auto Sales Visalia, CA

Routine car and engine maintenance is essential to keep your vehicle in prime condition, but there may be times that your car needs attention urgently. Strange noises from your engine should never be ignored, but there are some sounds that are particularly concerning. Below is a list of the top five noises that you should always get checked out right away.

Essential Engine Maintenance Tips: 5 Noises That You Should Never Ignore

1: Grinding

A grinding noise will make any driver’s heart sink, as it’s a clear sign of a problem. However, there are a variety of issues that can cause this type of noise, and some are easier to rectify than others. If you’re able to determine where the sound is coming from, it might give you a hint what the cause may be. For example, a grinding noise while braking could indicate critically worn brake pads.

Other possible causes of grinding noises include:

  • Clogged air filters
  • Worn gearbox
  • Insufficient lubrication
  • Damaged timing belt
  • Faulty alternator
  • Worn bearings

2: Whistling

Your vehicle may make a whistling noise when it’s idling, running, or sometimes even when it’s parked. You may also notice that the noise is either constant or intermittent. Being able to describe when the noise occurs and how long it lasts will help your garage pinpoint the underlying cause.

Whistling can often be due to problems with the airflow somewhere but can also be due to mechanical faults. Intermittent whistling can indicate a problem with the spark plugs or valves, while a more constant whistle may mean a clogged exhaust or worn-out bearings.


3: Squealing

A squealing noise can set your teeth on edge, but there are lots of potential causes. A loose serpentine belt is one of the most common reasons, but it could also be due to worn bearings, faulty spark plugs, or a clogged catalytic converter. Dirty or worn brakes can also sometimes cause a squealing noise, but you’ll notice this only occurs when you are braking.


4: Knocking

A knocking sound coming from your engine isn’t always loud, so it’s easy to miss, especially if you play music while you’re driving around. You might notice a knocking sound more clearly when you are accelerating rather than just cruising or idling.

Knocking can be caused by faults with the ignition timing, the fuel delivery system, spark plugs, or excessive carbon deposits. It can also be used by using a fuel that doesn’t have enough octane, which is why it’s vital to always follow manufacturer instructions when choosing your gas.


5: Clicking

Sometimes also described as a ticking sound, clicks coming from your engine aren’t normal. They can suggest there is an issue with lubrication, so you could try topping up your oil to the suggested level. If this doesn’t resolve the clicking immediately, there may be damage to the valves, rods, spark plugs, or oil filter.

If your car or truck is making any strange sounds, don’t delay in getting it checked out. Give us a call here at Dann’s Discount Auto Sales in Tulare or Visalia, CA to make an appointment.