Skip the auto shop - Our mechanics make house calls

Q: Engine knocking noise in 2003 Honda Civic

asked by on

The engine is starting to make a knocking noise.

A: A knocking noise is never a good sign on an...

A knocking noise is never a good sign on an engine. If the sound appears once, then the engine is started and gets louder when you rev the engine then it may be a rod knock meaning that the engine needs to be rebuilt. It can also be caused by an issue with one of the engine accessories or the timing belt. To isolate it, I usually remove the belt and start the engine to see if anything changes. The only way to know for sure would be to listen to where the noise may be coming from on the engine. If you wanted to have this looked at by a professional, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the noise and recommend a repair.

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: will not drive in right gear only in neutral will it move.

Hello there, many common faults will cause your 1999 Honda Accord to only move forward in neutral. The most likely fault is the shift linkage is faulty or worn shift linkage bushings. A qualified technician such as one from YourMechanic...

Q: I went to change the passenger side axle of my 2003 L300 3.0 and got the axle to find out the one in the car was not the same at

If you are not the original owner of the vehicle, it's possible an engine or transmission swap was performed before you purchased the vehicle. Whether this is the case or not, have your parts source check listings for a couple...

Q: What tips should be followed when driving with a trailer?

If you intend to drive while towing a trailer, you need to observe several important tips. It’s very different from driving without a trailer attached, and not following safety requirements can put you, your passengers and other people on the...

Related articles

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...
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.