Loose clutch petal

Billibob22 · 08-29-2016, 12:52 PM

Hello all
I have had this z for a little over 1 year now and just recently the clutch pedal has gotten easier to push, it has me trippin a little bit. Does it have to do with me needing to change the clutch fluid? If so can i do it myself? I have never changed it, is that bad? Should I change it more often? It still shifts fine but took it on a long trip to Vegas and now its feeling different. Any tips? Do it yourself clutch fluid changing guides maybe? Thanks in advance for your help!!

Zbrah · 08-29-2016, 03:06 PM

Google 370z csc and master cylinder issues.

Billibob22 · 08-29-2016, 03:48 PM

What are the symptoms of a csc failure?
It still has pressure and drives fine, just little less pressure when I press the pedal is all?

Sent from my iPad using Tapatalk

Jsolo · 08-29-2016, 10:45 PM

What does your petal look like?

Like this?

Pedal stiffness is dictated primarily by the pressure plate fingers. That is after all what you're pressing against to release the clutch. I suppose it's possible for the spring tension to weaken on these fingers and pedal pressure to change. A fail[ing] csc will typically have a fluctuating grab point, or even all the way at the floor and dead pedal for majority of its travel.

Changing clutch fluid is very easy. Just did it a few days ago on mine. You'll need some apparatus to remove the old fluid from the reservoir (but not completely), then either gravity bleed or have a helper pump the pedal slowly then hold while you open and close the bleeder screw at the trans. I did a combination of gravity bleeding to flush new fluid through the system, then a helper for good measure.

Post a pic of your clutch fluid reservoir with the cover removed.

Billibob22 · 08-29-2016, 11:10 PM

Quote:

Originally Posted by Jsolo

What does your petal look like?

Like this?

Pedal stiffness is dictated primarily by the pressure plate fingers. That is after all what you're pressing against to release the clutch. I suppose it's possible for the spring tension to weaken on these fingers and pedal pressure to change. A fail[ing] csc will typically have a fluctuating grab point, or even all the way at the floor and dead pedal for majority of its travel.

Changing clutch fluid is very easy. Just did it a few days ago on mine. You'll need some apparatus to remove the old fluid from the reservoir (but not completely), then either gravity bleed or have a helper pump the pedal slowly then hold while you open and close the bleeder screw at the trans. I did a combination of gravity bleeding to flush new fluid through the system, then a helper for good measure.

Post a pic of your clutch fluid reservoir with the cover removed.

Chuck33079 · 08-30-2016, 03:42 PM

Quote:

Originally Posted by Billibob22

Start setting aside funds for a CSC replacement. The dark stuff in that fluid is the seals inside the CSC.

nis350 · 09-02-2016, 01:42 AM

How long does the gravity bleed take? Do you just open the bleed bolt and let the fluid flow out?

Quote:

Originally Posted by Jsolo

You'll need some apparatus to remove the old fluid from the reservoir (but not completely), then either gravity bleed or have a helper pump the pedal slowly then hold while you open and close the bleeder screw at the trans. I did a combination of gravity bleeding to flush new fluid through the system, then a helper for good measure.

Post a pic of your clutch fluid reservoir with the cover removed.

TBatt · 09-02-2016, 09:15 AM

Quote:

Originally Posted by nis350

How long does the gravity bleed take? Do you just open the bleed bolt and let the fluid flow out?

Yes, that is what a gravity bleed is. How long it takes varies with how old the fluid is. Gravity bleeding is usually not quick but it does work. Make sure that you monitor the reservoir and don't let it run out. It doesn't hold very much fluid so it will need watching.

I myself, use a vacuum bleeder. It works and has been working for the past 15 years. https://www.griotsgarage.com/product...fType=&from=fn

This tool can be used for lots of car work.

mults · 09-02-2016, 12:52 PM

Quote:

Originally Posted by TBatt

Yes, that is what a gravity bleed is. How long it takes varies with how old the fluid is. Gravity bleeding is usually not quick but it does work. Make sure that you monitor the reservoir and don't let it run out. It doesn't hold very much fluid so it will need watching.

I myself, use a vacuum bleeder. It works and has been working for the past 15 years. https://www.griotsgarage.com/product...fType=&from=fn

This tool can be used for lots of car work.

According to the FSM, it says...

NOTE:
Do not use a vacuum assist or any other type of power bleeder on this system. Use of vacuum assist or power
bleeder will not purge all the air from the system.

Billibob22 · 08-30-2016, 12:09 AM

Found this Video http://www.youtube.com/watch?v=gBbsy0LjUvE
Here
This does NOT seem right.. Please look..
Will this do it?
If so, can you tell me which fluid to purchase?
Jeez, looks dirty.. I feel bad.. I wish I knew about it before... Kind of car stupid lol right down to the "petal" haha!
Thanks for replying ;-)

Jsolo · 08-30-2016, 08:38 AM

Several thoughts.

1) Level appears to be at the lower level marker. How long ago (time and miles) was the fluid last changed? I don't recall ever seeing my level drop. Even after 14K miles/3.5yrs (first change) and 8K miles/1yr (2nd change) intervals.

Take a look at this - link .

2) I'd start by doing a thorough flush/bleed. Monitor the level often and closely. It shouldn't move at all. If it does, be prepared for a CSC replacement. Considering your car is a 2010 with unspecified mileage, it's probably time for a clutch anyways. Replace the MC while you're at it.

Any dot 3/4 fluid would work.

Billibob22 · 08-30-2016, 02:55 PM

Quote:

Originally Posted by Jsolo

Several thoughts.

1) Level appears to be at the lower level marker. How long ago (time and miles) was the fluid last changed? I don't recall ever seeing my level drop. Even after 14K miles/3.5yrs (first change) and 8K miles/1yr (2nd change) intervals.

Take a look at this - link .

2) I'd start by doing a thorough flush/bleed. Monitor the level often and closely. It shouldn't move at all. If it does, be prepared for a CSC replacement. Considering your car is a 2010 with unspecified mileage, it's probably time for a clutch anyways. Replace the MC while you're at it.

Any dot 3/4 fluid would work.

Got it done!! I will watch the fluid for sure now! Thank you so much it already shifts better.
The fluid that came out was all watery and nasty!!
Clear now!

Billibob22 · 08-30-2016, 08:47 AM

Like most things on this car probably never changed...
This car seemed to be neglected.
57000 miles
I'll let you know how it goes! Thanks again!

Sent from my iPad using Tapatalk

Jsolo · 08-30-2016, 08:54 AM

Honestly, I wasn't planning on doing the clutch this year, but decided to pop the cap off after getting done with the brake fluid and didn't like what I saw. Because the OE fluid is less performance oriented dot 3, I think it's less hygroscopic, so it lasts a bit longer.

Benefit of dot 4 and other high performance fluids is its higher wet boiling point. Given the way I drive the car this doesn't really apply.

Jsolo · 08-30-2016, 03:04 PM

An outdoor lift?? Now I've seen it all.

08-29-2016, 12:52 PM	#1 (permalink)
Billibob22 Base Member Join Date: Jun 2015 Location: California Posts: 103 Drives: 40th Anniversary#365 Rep Power: 10	Loose clutch petal Hello all I have had this z for a little over 1 year now and just recently the clutch pedal has gotten easier to push, it has me trippin a little bit. Does it have to do with me needing to change the clutch fluid? If so can i do it myself? I have never changed it, is that bad? Should I change it more often? It still shifts fine but took it on a long trip to Vegas and now its feeling different. Any tips? Do it yourself clutch fluid changing guides maybe? Thanks in advance for your help!! __________________ Last edited by Billibob22; 08-29-2016 at 11:16 PM.

08-29-2016, 03:06 PM	#2 (permalink)
Zbrah A True Z Fanatic Join Date: May 2013 Location: The370Z.com Posts: 4,956 Drives: 370Z Rep Power: 5452	Google 370z csc and master cylinder issues. __________________

08-29-2016, 03:48 PM	#3 (permalink)
Billibob22 Base Member Join Date: Jun 2015 Location: California Posts: 103 Drives: 40th Anniversary#365 Rep Power: 10	Loose clutch petal What are the symptoms of a csc failure? It still has pressure and drives fine, just little less pressure when I press the pedal is all? Sent from my iPad using Tapatalk __________________ Last edited by Billibob22; 08-29-2016 at 11:17 PM.

08-29-2016, 10:45 PM	#4 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 15	What does your petal look like? Like this? Pedal stiffness is dictated primarily by the pressure plate fingers. That is after all what you're pressing against to release the clutch. I suppose it's possible for the spring tension to weaken on these fingers and pedal pressure to change. A fail[ing] csc will typically have a fluctuating grab point, or even all the way at the floor and dead pedal for majority of its travel. Changing clutch fluid is very easy. Just did it a few days ago on mine. You'll need some apparatus to remove the old fluid from the reservoir (but not completely), then either gravity bleed or have a helper pump the pedal slowly then hold while you open and close the bleeder screw at the trans. I did a combination of gravity bleeding to flush new fluid through the system, then a helper for good measure. Post a pic of your clutch fluid reservoir with the cover removed. Billibob22 and Thyristor like this. __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links Last edited by Jsolo; 08-29-2016 at 10:47 PM.

08-30-2016, 12:09 AM	#10 (permalink)
Billibob22 Base Member Join Date: Jun 2015 Location: California Posts: 103 Drives: 40th Anniversary#365 Rep Power: 10	Loose clutch petal Found this Video http://www.youtube.com/watch?v=gBbsy0LjUvE Here This does NOT seem right.. Please look.. Will this do it? If so, can you tell me which fluid to purchase? Jeez, looks dirty.. I feel bad.. I wish I knew about it before... Kind of car stupid lol right down to the "petal" haha! Thanks for replying ;-) __________________ Last edited by Billibob22; 08-30-2016 at 12:19 AM.

08-30-2016, 08:38 AM	#11 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 15	Several thoughts. 1) Level appears to be at the lower level marker. How long ago (time and miles) was the fluid last changed? I don't recall ever seeing my level drop. Even after 14K miles/3.5yrs (first change) and 8K miles/1yr (2nd change) intervals. Take a look at this - link . 2) I'd start by doing a thorough flush/bleed. Monitor the level often and closely. It shouldn't move at all. If it does, be prepared for a CSC replacement. Considering your car is a 2010 with unspecified mileage, it's probably time for a clutch anyways. Replace the MC while you're at it. Any dot 3/4 fluid would work. Billibob22 likes this. __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links

08-30-2016, 08:47 AM	#13 (permalink)
Billibob22 Base Member Join Date: Jun 2015 Location: California Posts: 103 Drives: 40th Anniversary#365 Rep Power: 10	Like most things on this car probably never changed... This car seemed to be neglected. 57000 miles I'll let you know how it goes! Thanks again! Sent from my iPad using Tapatalk __________________

08-30-2016, 08:54 AM	#14 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 15	Honestly, I wasn't planning on doing the clutch this year, but decided to pop the cap off after getting done with the brake fluid and didn't like what I saw. Because the OE fluid is less performance oriented dot 3, I think it's less hygroscopic, so it lasts a bit longer. Benefit of dot 4 and other high performance fluids is its higher wet boiling point. Given the way I drive the car this doesn't really apply. Billibob22 likes this. __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links

08-30-2016, 03:04 PM	#15 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 15	An outdoor lift?? Now I've seen it all. Billibob22 likes this. __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links

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