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When driving there is a loud knocking noise

Tiny
LESLIE KEITH JAMERSON
  • MEMBER
  • 1999 CHEVROLET CAVALIER
  • 2.2L
  • 4 CYL
  • 160,000 MILES
A loud knocking sound inside the engine when driving.
Thursday, July 15th, 2021 AT 10:59 AM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

If it is coming from inside the engine, something internal has failed like a bearing or broken piston.

https://www.2carpros.com/articles/engine-noises

It would be cheaper to replace the engine with a used engine that tries to fix the issue.

If you could attach a video of the noise, we can confirm it.

Roy
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Thursday, July 15th, 2021 AT 11:35 AM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

First thing you should do is check your oil level. Low oil could make noise from the engine.

This article might be helpful:

https://www.2carpros.com/articles/engine-noises

https://youtu.be/OTeg2CUB5NE

I have attached a step by step diagnosis procedure.
Let me know if you have any questions.
Thank you.
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Thursday, July 15th, 2021 AT 11:39 AM
Tiny
LESLIE KEITH JAMERSON
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Thank you.
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Thursday, July 15th, 2021 AT 5:17 PM
Tiny
ASEMASTER6371
  • MECHANIC
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You are welcome.

Keep us updated.

Roy
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Thursday, July 15th, 2021 AT 5:57 PM

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