Skip the auto shop - Our mechanics make house calls

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?

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
  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: Noisy lifter or lifters 2001 Ford F150

Hello - unfortunately, valve lifter replacement is not a service YourMechanic.com offers at this time. Thanks for thinking of us though!

Q: Car won't drive

This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, turning on AC or engaging the brakes). The Manifold Absolute Pressure (MAP) sensor...

Q: What does the loose fuel cap warning mean?

If you see the loose fuel cap warning shown in the vehicle information display, it usually means that the gas cap isn’t screwed down all the way. If the gas cap’s seal doesn’t lock in, the system will detect a...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...