i have an 03 g35 coupe automatic and i started hearing a rattling noise coming from the engine when i accelerate. my check engine light came up and i don’t know what’s wrong i need help toward what could be up with it i’m thinking it’s the timing chain. i’m gonna add a link to a youtube video where you could heard the noise it starts around 10 seconds into the video.

 

Cant really tell what the noise is from your video. But first thing to do would be to get your code scanned and see what it says.

 

Best idea!
You should also check your oil level, not good to run your G below the full level...ever!
Gary