Loud Engine noise 2003 G35

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Feb 4, 2024 | 07:41 AM

PaulRe

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Loud Engine noise 2003 G35

Any one knows the cause of this engine noise? It's been going on for approximately one year. No codes.See YouTube Video

Last edited by PaulRe; Feb 6, 2024 at 11:29 AM. Reason: different video

Feb 13, 2024 | 10:19 PM

Scottwax

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6 speed G35 sedan

Check to see if the fan is hitting anything.

Feb 14, 2024 | 03:14 PM

PaulRe

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I took your advice and investigated the fan. There's no indication of anything making contact with it.
.

Feb 14, 2024 | 04:04 PM

fitgineer_93

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From: Saskatoon

Sounds timing chain related to me. I'd be surprised if it held up for a year slapping around like that, however.

Feb 14, 2024 | 10:30 PM

PaulRe

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I believe you're correct. Based on my extensive viewing of YouTube videos, it seems that the common issue with G35s is the breaking and shifting of the timing chain plastic guide(s), which then causes the tensioner(s) to extend either partially or fully. Despite this, I haven't encountered any error codes, and my acceleration remains relatively good.