Hello, i'm new to this forum and wondering if i can get helped with my engine noise issue ( if it is engine noise to begin with ). Here is a video i recorded regarding the sound ( can hear the sound more clearly at the beggining of the video and 1:17 - 1:28)



Thanks for your help!

 

It kind of sounds like a dry bearing noise really lightly.

However I assume you are talking about the "knocking" sound, is how I would describe it.

It is pretty faint noise, can you hear it while driving or how did you come across it?

 

no i can't hear it while driving. I hear it during a startup kind of sound like a squeeking/bird chirping sound but i can't hear it from the inside of the car

 

I personally wouldn't be too worried about it. It doesn't sound like it's anything catastrophic. I would just keep driving it and if it gets louder or something changes then look into it a little further. It could be a possibility of a thousand things

 

It sounds like your a/c is on. Try turning that off and then see if that sound stops.

 

my a/c was off the whole time i recorded the video

 

either idler pulley or tensioner pulley bearing is going bad if its a "chirping" noise. kinda hard to tell through a video uploaded to the internet tho. if you have access to a vibration stethascpoe, you can diagnose pulley bearings with that.

 

yea +1 to the post before about it could be numerous of things.. i wouldn't worry as well about it unless the problem worsens in any way

 

This is a tough call, doesn't sound like anything serious. Drive and enjoy your G, if it gets worse it will be easier to find....nothing serious since there's no clatter.
Gary

 

thanks for the helped you guys i'll just enjoy it for now and see if anything happens in the future <3

 

Sounds like piston slap.

See this thread. Guy also has a video. Everyone blamed it on the ABS or said it was normal. It turned out to be a bad engine bearing. Metal shavings all over. etc etc. Engine was replaced under Warranty. He had a 5AT non Rev-Up.

https://g35driver.com/forums/engine-...upe-video.html

So, the only way to find out is to pull out the valve cover or oil pan and see if there are any metal shavings or damages. You're out of warranty so I'm guessing you're just going to wait it out and hope for the best. lol

 

i highly doubt its a piston slap but thanks for the heads up

 

Piston slap? That sounds dirty!

Let us know if you figure it out

 

ok so problem solve. it was my tensioner pulley bearing going bad so i replaced it and everything sounds as it should be. Thanks everyone for your help!