Clutch Trouble?

BrianMSmith · 05-24-2015, 11:36 AM

My clutch just started making a "clunk" noise right at the top of the travel upon full release, and feels a bit different. The engagement feels the same as far as I can tell. Is this a sign of clutch wear, slave cylinder trouble, or maybe bad hydraulic fluid? 96000 miles, factory clutch.

fjpthree · 05-24-2015, 09:50 PM

sounds like slave cylinder. Mine started the same way. You can try doing a fluid change to see if that helps.

mishuko · 05-25-2015, 08:42 AM

96k miles on factory seems really good.

have you checked underneath / around the clutch pedal to see if anything is catching or interefering with the movement?

then check if the fluids have dropped it's probably a sign your csc is about gone (or maybe even master).

and finally if those are not the cause... have you tried a cluth slip test? drop into 4th or 5th and do a WOT from low rpm to check for any slipping.

kenchan · 05-25-2015, 09:28 AM

yah, first step check fluid level. It should be at MAX. If not it's probably leaking.

If it is at MAX, then change your clutch fluid if you haven't already. i used dot3/4 valvoline.

mishuko · 05-25-2015, 11:29 AM

Quote:

Originally Posted by kenchan

yah, first step check fluid level. It should be at MAX. If not it's probably leaking.

If it is at MAX, then change your clutch fluid if you haven't already. i used dot3/4 valvoline.

mine came a bit from 'max' level but hasn't moved... i even had a dry erase marker on the line to make sure it wasn't moving for awhile....

super ocd paranoid sometimes

Read T · 05-25-2015, 01:46 PM

Better to be OCD than stranded or in a wall.

kenchan · 05-26-2015, 04:57 PM

Quote:

Originally Posted by mishuko

mine came a bit from 'max' level but hasn't moved... i even had a dry erase marker on the line to make sure it wasn't moving for awhile....

super ocd paranoid sometimes

like the brake lines if there was tiny bit of air in the system, i can work its way up to the reservoir resulting in a tiny drop. that is considered non issue.

good thinking you marked it. i took a picture of it and saved in my phone.

i like to use modern technology...

mishuko · 05-26-2015, 07:41 PM

Quote:

Originally Posted by kenchan

like the brake lines if there was tiny bit of air in the system, i can work its way up to the reservoir resulting in a tiny drop. that is considered non issue.

good thinking you marked it. i took a picture of it and saved in my phone.

i like to use modern technology...

Technology always fails me

or I fail to

Merv · 05-27-2015, 09:09 AM

Does it do it through all the gears?

kenchan · 05-27-2015, 12:23 PM

Quote:

Originally Posted by Merv

Does it do it through all the gears?

axmea? · 05-28-2015, 02:28 AM

What about when shifting through the gears and onto third it drags before it "bites". What do you think is happening? Occurs to me when gas to the floor shifting from 2nd to 3rd gear. Happened twice already. Slipping?

Z Quality · 05-28-2015, 02:52 PM

Can you hear it when the car is off and you cycle the clutch pedal?

05-24-2015, 11:36 AM	#1 (permalink)
BrianMSmith Enthusiast Member Join Date: Dec 2009 Location: secret Posts: 267 Drives: 370Z, Ducati 748S Rep Power: 16	Clutch Trouble? My clutch just started making a "clunk" noise right at the top of the travel upon full release, and feels a bit different. The engagement feels the same as far as I can tell. Is this a sign of clutch wear, slave cylinder trouble, or maybe bad hydraulic fluid? 96000 miles, factory clutch.

05-25-2015, 08:42 AM	#3 (permalink)
mishuko A True Z Fanatic Join Date: Jul 2014 Location: bouncin on tigga Posts: 8,062 Drives: '12 Z Rep Power: 9435	96k miles on factory seems really good. have you checked underneath / around the clutch pedal to see if anything is catching or interefering with the movement? then check if the fluids have dropped it's probably a sign your csc is about gone (or maybe even master). and finally if those are not the cause... have you tried a cluth slip test? drop into 4th or 5th and do a WOT from low rpm to check for any slipping. Last edited by mishuko; 05-25-2015 at 08:48 AM.

05-25-2015, 01:46 PM	#6 (permalink)
Read T A True Z Fanatic Join Date: May 2012 Location: Raleigh, NC Posts: 1,046 Drives: 11 Nissan 370z BC 6M Rep Power: 18	Better to be OCD than stranded or in a wall. __________________ 2011 Nissan 370z Black Cherry Sport Pkg - Daily Driver, , 1960 Morgan +4 fun car, 1986 BMW 325ES, 1998 M3 and 1996 Spec Miata - Race Cars SUPPORT TEAM WINSOME RACING - WRL, CHUMP, LEMONS

05-27-2015, 09:09 AM	#9 (permalink)
Merv Track Member Join Date: Dec 2013 Location: Vancouver B.C Posts: 518 Drives: 11 GM grey sport tou Rep Power: 15	Does it do it through all the gears? __________________ Swift springs \| upgraded headlights \| stillen gen3 cai \| FI HFC's and FI CBE \| ecutek tune in the mail!

05-28-2015, 02:28 AM	#11 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,236 Drives: WELL ZED PW 6MT Rep Power: 53241	What about when shifting through the gears and onto third it drags before it "bites". What do you think is happening? Occurs to me when gas to the floor shifting from 2nd to 3rd gear. Happened twice already. Slipping? __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete

05-24-2015, 09:50 PM	#2 (permalink)
fjpthree Base Member Join Date: May 2011 Location: Maryland Posts: 67 Drives: 09 Touring/Sport/Nav Rep Power: 14	sounds like slave cylinder. Mine started the same way. You can try doing a fluid change to see if that helps.

05-25-2015, 09:28 AM	#4 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	yah, first step check fluid level. It should be at MAX. If not it's probably leaking. If it is at MAX, then change your clutch fluid if you haven't already. i used dot3/4 valvoline.

05-28-2015, 02:52 PM	#12 (permalink)
Z Quality Base Member Join Date: Dec 2010 Location: Cincinnati, OH Posts: 17 Drives: Nissans Rep Power: 15	Can you hear it when the car is off and you cycle the clutch pedal?

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