Skip the auto shop - Our mechanics make house calls

Q: Engine is knocking

asked by on

My engine is knocking.

Have you checked your oil level lately? Many times low oil level causes low oil pressure. Low oil pressure will make the engine knock because the oil is not lubricating the engine. If this happens for long enough it can damage the bearings in the engine and cause a knocking sound to be permanent until the bearings are replaced. I would ask for help from one of the mechanics at YourMechanic to check the condition of your engine and diagnose the knocking sound to see if any repairs are needed.

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: New battery, car still won't start. Single click sounds, like a dead battery

It sounds like you may have a faulty starter solenoid. If you hear a clicking sound when turning the key, it is likely that your starter solenoid may be faulty. The starter solenoid is located on the starter and has...

Q: Why would my engine start knocking a few days after an oil change in my 2001 Volkswagen Beetle

Hi there. It sounds like you may have a serious issue starting with the engine. I would check the level of the oil first. If it is very low then that may be the cause of the noise. If the...

Q: Can't start car

The parking brake mechanism controls the rear brakes, and if the rear brakes, or the parking brake cable is overtightened, the brakes may bind. Also, if the parking cables are rusted excessively, then the cables may bind and cause the...

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...