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・Save up to 30%

Get a quote

What others are asking

Q: Engine sounding louder.

Increases in engine noise are usually caused by exhaust leaks. Older vehicles, such as your Mazda, can develop exhaust leaks over time and develop a growing noise. If your car is driving normally but giving out an overall louder noise...

Q: What may cause my transmission to jerk?

These types of rough running issues are very hard to diagnose without taking a look at the vehicle and doing some diagnostic testing. This could be caused by the vehicle needing a tune up, a fuel pressure problem, a vacuum...

Q: ABS light on, rattling sound coming from the engine - 2005 Chevrolet Suburban

Due to this being a possible safety concern you will want to have this issue looked at as soon as possible. GM has several TSB's out for various ABS and stability system issues. All of these TSB's do have specific...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...