Skip the auto shop - Our mechanics make house calls

Q: Engine knocking

asked by on

My car engine is knocking.

A: Knocking in your engine, also described as ...

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!

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: Key not going into ignition

Hi, if the wiring is damaged then the computer won't be able to communicate with the lock cylinder correctly and cause it to lock up. You should have a certified technician, such as one from YourMechanic, inspect the wiring from...

Q: My Toyota Camry is knocking and ticking.

Ticking and knocking usually isn't a good thing. Does the speed of ticking increase with engine speed while sitting still? If so this means that it is coming from the engine. If the sound increase in speed on as the...

Q: Make a clicking noise when accelerating from a dead stop then goes away.

Hi there. Without a little more information, the first things that come to mind are a faulty wheel bearing, a CV axle that is going bad, a brake issue, or any number of other possible causes for the noise. It...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.