Hello,
Can you determine where the noise is coming from? Usually a "knocking" noise will come out of the lower end of the vehicle engine and will indicate either worn or damaged main bearings or worn or damaged connecting rod bearings or worn or damaged wrist pins on the connecting rods themselves. Here is a link below to a guide that will explain it a little more in detail below?
https://www.2carpros.com/articles/engine-noises
Please go through this guide and get back to us with what you are able to determine.
Thanks,
Alex
2CarPros
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Sunday, January 5th, 2020 AT 7:00 PM