My 03 6MT G35 i have had for few months now.
Not sure if i am imagining this or not but i swear it wasnt always like this..
I push my clutch in and as it is almost down to the floor and i feel a bit of resistance (like a clunk), if i push down real fast i can feel two little clunks (car is sat in drive way not even turned on). When driving i also feel this clunk..

Car has done 17,000miles, im about to do a service which in the book is just oil + oil filter and top up power steering.

Should i do clutch fluids? they are on the minimal end of the reserve until the hood..

Plus is this resistance thing normal? Do i have something that needs looking at?

 

maybe just flush the clutch fluid?!? i never heard of a clutch clunking, only getting mushey.

 

You dont hear anything, just when pushing it in its like it hits a very weak wall/bump and then continues... What oil can be used to do the flush and use replace the old stuff?

 

Clutch fluid is actually brake fluid. The OEM recommended fluid (in the repair manuals) is DOT 3. Here, check these links out. One is the clutch section of the repair manual, and the other is a video on flushing/changing clutch fluid.

http://www.g35frenzy.com/downloads/2...anual/C/CL.pdf

http://infinitihelp.com/diy/gsedan/p...id_service.htm

 

Great Thanks.

 

maybe failing slave clutch? your clutch isn't fully disengaging from the tranny when you push it until put it all the way down.?!? Check the cyclinder attached to the clutch for any leaks. But i would just flush the clutch first and see if it makes any difference.

 

I forgot to add that DOT 4 fluid is also fine...it can actually handle more heat than DOT 3.

 

yeah, but how bad would your driving to have to be to make dot 3 boil on a clutch..lol

 

I've never had a problem with DOT 3 fluid, but then again, I've never truly driven my car hard enough (ie taken it to the track). I hear it only takes a handful of successive hard launches for the DOT 3 fluid to boil. Don't quote me on that, though.

 

What you might be experiencing is the switch for the clutch depression sensor.

The clutch depression sensor makes sure your clutch pedal is pressed down (so the clutch is disengaged) when you start the car, which prevents the possibility of starting it while the motor is connected to the wheels.

 

I might be wrong, but i think it has nothing to do with clutch fluid. in my impression clutch fluid would work all or nothing.... rather, it is a hardware problem.

 

you guys are all wrong.
It has nothing to do with clutch fluid or slave cylinder.
The clunk noise is coming from the transmission fork area.
When you depress the clutch pdeal, your slave cylinder pushes the fork on the tranny.
I confirmed that the noise is coming from the fork area. I think it's most likely from the throwout bearing, fork, pressure plate area inside the tranny.
There's no option to fix it unless you replace the whole clutch assy.
just depress it really slow, and you won't hear it.

 

Can you explain further so i can see if this is the case ?

THanks
Click the video below to play it


EDIT
took a video. Ignore the sound as it is fully release and the initial sound as pressing in. Listen for the bump or little bumps as i push faster. Also notice that when not full release when bring it back half way and push in again the clunk is not present... Does this help Nate?

 

If it's loud clunk noise, it's not from the clutch assy. Clutch assy only makes clicking noise, and it's not that loud.
here's the picture of the area that I'm talking about.

 

Thanks for the pic

Can you click the video Nate and tell me if that is normal or ?

Thanks very much