I have a 2004 g35 coupe 6spd (85k mi). I was out of the country for a while (5months) and i let my dad drive the car around while i was gone. Before i gave it to him, i knew the car needed a new clutch it wasnt slipping yet, but right now it has to get changed plus many other things...its going to be a money pit...

Since i have been driving the car, I noticed that when the car is warmed up, and sitting in the drive way there seems to be a louder rattle from the flywheel and when i rev the car to like 3000 rpms and when the rpms drop to around 1000rpm and lower, it makes 2 to 3 loud clinks from the flywheel im thinking. One other thing is when i drive in gears 1-5 usually the car makes a chirping noise when i accelerate. its pretty loud! i try putting the car in neutral while coasting and rev the car its still makes the noise. When the car comes to a halt and i rev it, it still makes the noise, but it seems like if the clutch is engaged or disengaged it dosent make a difference really. after i let it sit in the drive way after driving for a while and after a couple revs the chirping stops...the clinking/rattle when the rpms drop is still there...

I just want to know if its the clutch and flywheel or something.. because im going to have to dump a lot of money into this car and i just want to know if its worth it. recently also i changed my exhaust to the stock ones too recently..and the car also has a pop charger for the last 20Kmi..

anyone has any advice or suggestions please let me know..Thanks!

 

Video?

 

what after market parts do you have? possibly a kinetix plenum?
Having the issue go appear when hot and disappear when cool ( my plenum was sensitive to this) and be based off accelleration and air gulping would lead me to think you have a vacuum leak. Hows your idle? is it rough or low? Just an idea.. not sure tho.

VIDEO please.

 

No i dont have a plenum, i will record a video tomorrow and put it in youtube. because i know while driving its going to be hard to record the audio with the wind blowing because you cant hear it with the windows up... if i drive while the car is cold, like 30sec since start then you cant hear it.