Q: 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?
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. Q: 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: Q: AT light turns on

There are many things that can cause a condition like the one you are describing. Unfortunately, with the limited information provided and all the variables, a diagnosis is difficult. Low line pressure, faulty SERVO, bad shift solenoid, faulty pressure control...

Q: Knocking sound and steering column vibration - 2005 GMC Sierra 2500

Without hearing or experiencing the noise myself, it is hard to make an accurately diagnose this but GM has a TSB (technical service bulletin) that may address this concern. There are 3 possible causes from a body mount at the...

Q: Clunking noise when coming to a stop

If you have the 4WD version of the truck with CV axles in the front, a possibility is a faulty outer CV joint. Such can often be detected on visual exam and with simple tests. Failure of the outer CV...

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.