Five Engine Noises That Require Immediate Attention

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Five Engine Noises That Require Immediate Attention
By: Luke Shaff ~ 2/9/2023

1957ConvertibleAtLukesShop04292021C.jpgHissing or chirping engine
An engine hissing or chirping noise could mean one of several things may be going wrong. Here are some possible causes:

  1. Cooling system leak

  2. Engine overheating

  3. Damaged hose or vacuum

  4. Exhaust leak (from the rear of the car)

  5. A leak in the cooling system

Since a hissing noise could come from one of several cooling system parts, the noise could indicate potentially urgent problems.

Whirring or Whining acceleration
If you notice a whining noise when accelerating, you may have a worn serpentine belt or a leak. It can also be caused by low engine oil, a worn bearing, or a power steering issue. A more extreme case would be a problem with the transmission, which cost more in parts and labor later on if not addressed.

A knocking sound is one of the most urgent engine sounds to address. It could be caused by several issues related to the engine’s internal parts, such as an incorrect fuel mixture, a timing problem, a worn bearing, or a bad knock sensor. Any of these problems could quickly devolve into a more expensive repair later on.

Popping Sounds
A popping sound could indicate a problem with the valvetrain, which feeds the engine with fuel and air. An imbalance or incorrect timing in this process could lead to engine damage.

Grinding or Rattling Sound on Engine Start
On some newer vehicles with timing chains, a grinding or rattling sound on a cold morning start could indicate a loose chain or worn tensioner, which could lead to timing issues, a major cause of engine damage.

Luke’s Automotive Redmond is your local, knowledgeable car mechanic with the necessary diagnostics tools to properly identify issues and repair your car in the most effective manner. Luke’s Automotive has been a trusted family-owned service for 40 years.