Q: Knocking/ticking sound when engine idles

asked by on

There is a knocking/ticking sound when the engine idles.

The only way to diagnose a knocking noise is to hear it to see if the noise is in the top or bottom of the engine. If from the bottom, then a piston, rod, or crankshaft problem is present. If the noise is in the top then a camshaft or valve train is at fault. Only a trained experienced mechanic can diagnose a problem like this by hearing it for themselves. I recommend you have a mechanic like one from YourMechanic inspect your engine’s noise for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Knocking/ticking sound when engine idles

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Tried starting car with alarm on, now flashing yellow key light and won't start.

It seems as if your vehicle thinks you are trying to steal it. This could be due to a number of different things. It is possible that the chip in your key if it has one could not be being...

Q: I hear a rattling sound when I accelerate; which seems to get louder after I drive 10 min. 2002 VW Golf/90,000/2.0L

A car can make such a wide variety of sounds, that it's impossible for me to suggest with any degree of reliability what may be going on from this desk. I can only say that it's important not to ignore...

Q: The belt came off the pulleys

One of the first things that should be checked when dealing with a serpentine belt that has come off would be to check that all of the pulleys that are used for power steering, water pump, idler pulleys, alternator, crankshaft,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...