Knocking noise while accelerating?

Tiny
CJ777
  • MEMBER
  • 2005 CHEVROLET IMPALA
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Hello,

When I accelerate from a stop it will make a knocking noise from the front (sometimes) and also at low speeds. I just got a tune up, new spark plugs, replaced oil pressure switch, new air filter, fresh oil change. What can be the cause? I need expert advice.
Thursday, June 8th, 2023 AT 9:43 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,279 POSTS
It sounds like you have a rod knock but to be sure can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. You can upload it here with your response.

This guide can help as well:

https://www.2carpros.com/articles/understanding-and-repairing-engine-knocking-noise-an-in-depth-guide

Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Friday, June 9th, 2023 AT 12:56 PM

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