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.

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

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: Power seat not going up.

Your power seat should have two different electric motors that operate it. One motor is for the lower portion of the seat that you sit on and adjusts it forward, backward, up, and down. The other motor controls the back...

Q: I can't figure out why there's a leak coming out of the coolant reservoir tank

Hi there. Check the radiator cap to see if it is sealing. Put a pressure tester on the radiator cap and pump it up till the pressure spits out, then let it sit. If the pressure drops down, then the...

Q: Runs fine then randomly quits and won't start

You will need to first check to see if the vehicle has fuel pressure. Replace the fuel pump if it is bad. You may have to remove the fuel tank completely and get out the small metal particles out of...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...