what is making this noise?

[uhajdin]

I have a noise that comes from my car during low revs, still kinda exists in 2 to 4k revs but I can't hear it as much, I have no idea what it is and if someone can tell me what is it is so I can repair it or replace it, its very annoying, its like a buzzing sound when revving, it starts at 14 seconds in this video and you can hear it very clearly, please help! thanks

 

[Mongler98]

My money is on a lifter.
Pull off the valve cover and visually check the wear on each cam lobe and each lifter the beat you can.
I'm not an expert on this stuff but that sounds like the lifter has an issue of not being filled will oil due to larger gap between it and the bore.
Dont take my advice to heart. It could be something with the timing belt or serpentine belt. It sounds like a a bot of a belt has ripped off and it hitting plastic. But who knows. I would definatly check the timing belt and what not as it's a mission critical part.

 

[uhajdin]

ill have a look into that, I changed my timing belt recently, I don't think it could be that but I'll check it too, is there any easy way to detect where a sound is coming from, thank you

 

[Mongler98]

You can get a mechanics stethoscope with a probe. About $5 at harbor fright. Other than that and visual inspection and maybe some feeler gauges and a caliper micrometer, ...... it's a guessing game. You will eventually find the issue.

 

[uhajdin]

thank you for your help.