Skip the auto shop - Our mechanics make house calls

Q: Engine knocking

asked by on

My car engine is knocking.

Knocking in your engine, also described as pinging, can mean one of several problems. Some may be easily fixed while others may indicate major damage. The knocking sound often occurs when the fuel and air mixture is incorrect, which causes the fuel to burn in uneven pockets rather than uniform bursts. Left untreated, it can cause damage to the piston and cylinder wall. If the sound is a deep knock that is loud, it indicates that your rod bearings are worn out. Pretty soon, the bearings will fail, which means your car will likely leave you stranded. If you hear such a noise, I recommend having a technician come out and inspect the sound and determine if that is the problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Engine knocking

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: Knocking when starting from a cold start

This is somewhat normal as the oil sits down in the oil pan when the car has sat for an extended period of time. When you first start it in the morning, it takes a bit of time for the...

Q: Front wheel noise when turning the steering wheel

Normally, that is from worn outer CV joints. It's a front wheel drive car, it generally means you need new CV joints. The way the things go today is you better just replace the whole driveshaft. Because they make stuff...

Q: I/M monitors incomplete

Hey there. The two monitors not complete let you know that the computer is unable to complete the tests on both of these systems due to problems with the systems. The first thing to have done is to have the...

Related articles

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...