Hear anything strange? Here is what your car is telling you

Motor automobila

You are probably familiar with the sounds your car usually makes. But what should you do when strange sounds appear? In this article, we will try to explain what kind of wreck or nuisance a certain sound might imply.

  • High-pitched sound that ceases when you turn off the engine: Adjust or replace the belt. A belt should be elevated about 1 cm and must not be worn out, cracked or glazed.
  • A continuous high-pitched sound that may continue after you turn off the engine: The rubber gasket on the radiator pressure cap might be worn.
  • Rhytmic ticking while the engine idles: It's possible that your oil level is low. Turn off the engine and wait for ten minutes for the engine to cool. Then check oil level. Our video tutorial can help you if you are not sure how to do this by yourself. If the oil level is alright you will probably have to have a mechanic check the valves.
 

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  • ·    Loud knocking in your engine: Pull over and call for a car service. This sound may come from a lose rocker arm or a faulty piston, which can lead to engine wreck.
  • Soft knocking: this may come from using fuel with the wrong octane rating.
  • You hear the engine working after you have turned it off: This can happen to cars that have carburetors. The reason minght be that the idle speed is set too high or because of excessive carbon in the combustion chamber.
  • Whistling coming from under the hood: Check hoses for leaks. If the whistling comes from the inside, it’s highly likely that there is a leak in the weatherstripping.
  • An offbeat rhythm while the engine idles: Turn it off and try to see some of the following:
    • Check if the cables that lead to the spark plugs are damaged or disconnected
    • Check if the spark plugs are clean and properly gapped by removing one by one. Change the ones that are damaged or burned out.
    • If it’s not the spark plugs that cause the problem, have your mechanic check the ignition system electronically.
  • The engine idles loudly:  A technician should check compression in each of the cylinders.  
  • Your car produces an extremely loud sound:  It probably has a hole in the muffle. Have it replaced as soon as possible.
  • You hear wailing or a low buzz on curves: The cause might be worn out wheel bearings.
  • The tires produce a strange rhythmic sound as you drive: Check how much they are inflated, how much they are worn and if the wheels are balanced.
 

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  • You hear squealing as you step on the brake: The brake pads are probably worn. Have them replaced as soon as possible.
  • Rumbling sounds that come from under or go towards the rear:  The cause might be a damaged exhaust pipe, muffler, catalytic converter, worn universal joint or some other part of the drive train.
  • You hear clunking coming from under the vehicle, especially when you go over bumps: It’s probably the shock absorbers or the suspension system. If the sound comes from the rear, you might have a loose tailpipe or muffler.

Please bear in mind that the explanations provided in this article are of general character and that you will need to consult your mechanic for precise diagnostics. Feel free to contact us if you would like to suggest a topic that you want to know more about.

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