Skip the auto shop - Our mechanics make house calls

Q: The car is knocking

asked by on

My car is knocking. I'm not sure if it is the crankshaft, or the timing belt.

A: The knocking would have to be listened to b...

The knocking would have to be listened to by a mechanic before a diagnosis can be made, since different kinds of knocks mean different problems. The serpentine belt should be removed prior to a diagnostic test, to eliminate the possibility of an accessory causing the problem. The engine would then started to see if it is a lower engine thump, or an upper engine tick, or something in between. Also, if it comes and goes when the engine is accelerated, that could indicate a piston pin or rod issue. I recommend having a mechanic, like the ones from YourMechanic, come by and give your car a proper noise diagnosis in order to isolate the noise, and recommended any needed repairs.

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: Overheating

Hello, thanks for writing in. It sounds like the heater core and radiator core may be partly clogged. Have the flow through the radiator checked using a laser pointing temperature probe. If you find the radiator flow through the cores...

Q: My car makes a groaning sound whenever I turn left. What could be the cause?

Go through the following steps to find the cause of the issue with your car: Groaning sounds in your car can indicate that the power steering pump is failing. Check the power steering fluid and see if it smells...

Q: I have no acceleration

The 4.6 engine is a generally a very dependable engine. The lack of acceleration in this engine may be cause by be a few different sensors being faulty or the fuel system malfunctioning. The first thing I would suggest is...

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...
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 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...