Rattling noise on cold starts?

2009 HONDA ACCORD
120,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
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JEKEKE
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Rattling noise from the timing side of the engine only on cold starts and lasts about 2 minutes. I have taken the serpentine belt off to rule out the pulleys, so the noise is coming from the engine. Can't add the video here so here's a link to the video on YouTube : https://youtube.com/shorts/Gq_rXTTlHsA?feature=share
Jan 31, 2023 at 11:07 PM
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BORIS K
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Hello,

This noise appears to be coming from the timing chain side.
It sounds more like a rhythmic scraping noise than a rattle
If the engine was a timing belt engine, I would have said the timing belt is too tight or the timing belt tensioner bearing was failing.
A good layout of the timing chain set up in your engine, the smaller chain is the oil pump drive chain is in the image below.
Do you have any rattling noises on startup which last a few seconds?
Engine oil level and condition?

A video on timing chain issues on Honda engine:
https://youtu.be/L4A6eGGWnLA

Cheers, Boris
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Feb 1, 2023 at 9:04 AM