Q: Tapping noise when under a load.

asked by on

My car gets tapping noise when accelerating from stop. Once it pick up speed it doesn't do that. And the noise also comes back when going up hill. I have checked oil level. It is good. Please let me know what could be the problem. I can upload a clip of sound as well. Thanks.

As per request to an earlier question here is the sound clips of noise. Can be heard at 7sec onwards. https://soundcloud.com/user-420341856/voice-001

Sorry for the post. I did not know how to reply to earlier answer by David https://www.yourmechanic.com/question/tapping-noise-when-accelerating-by-jay-p

My car has 58500 miles.
My car has an automatic transmission.

Hi there. The sound that you provided for the tapping noise sounds as if your engine is dieseling when operating. This is a noise that occurs when the engine is either running too hot or has too much carbon on the pistons causing the fuel to burn when the piston is not at top dead center. There is a pinging noise and slight clicking noise as the engine is accelerated and then a loud banging type noise as the throttle is let off in the audio. The noise is the same as a Detroit Diesel engine shutting off. I recommend cleaning the engine parts with sea foam in the fuel system and the intake system to clean up any carbon on the pistons and valve train to reduce the temperature in the cylinders as the engine is running. If you need further assistance with your engine making a noise, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Tapping noise when under a load.

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: Car is tapping

Occasionally, belt driven accessories are the source of noise so you can try to isolate all belt driven components by removing the serpentine belt and briefly run the engine. If the noise remains, a common source of tapping is the...

Q: The vdc light and service engine lights came on, car started missing and then died?

Hi there. The VDC (vehicle dynamic control) and service engine lights coming on, is an indication there is a fault or faults recognized. The engine misfires, then died, and sluggishness are likely the fault(s) recognized. Turning the ignition switch off...

Q: What happens if the power steering system stops working?

The power steering system in your car is not “essential”, but it sure does help. If you’ve never driven a car without power steering, count yourself lucky. Just turning the wheel was a chore. The power steering system in your...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...