Desperate for clutch bleeding help

Pheonix · 05-03-2014, 04:45 PM

Clutch bleeding tips PLEASE.

Replaced CSC, clutch and flywheel. Got it to where it was full resistance and releasing completely.

Feeling comfortable and took it for a test drive and halfway through started sticking closer to the floor and not disengaging fully...by the time I stopped and let my buddy have a feel it would no longer go into gear.

We've been on the side of the road trying to bleed again now for 45 minutes.

Does anyone have any bloody ideas? This thing won't build to full resistance again and we're both out of ideas

Pheonix · 05-03-2014, 04:46 PM

Thinking master cylinder is still good because it does still build resistance, just not full. Pumping slowly and steadily.

JARblue · 05-03-2014, 04:47 PM

Did your CSC fail? If so, did you replace the CMC?

Are you just bleeding clean fluid at this point or does there still seem to be air in the system?

1slow370 · 05-03-2014, 04:49 PM

then ur csc is probably dead and no amount of bleeding will help it call AAA or your insurance.

JARblue · 05-03-2014, 04:49 PM

Quote:

Originally Posted by Pheonix

Thinking master cylinder is still good because it does still build resistance, just not full. Pumping slowly and steadily.

I'm no expert, but if your CSC failed previously, I'm pretty sure your CMC is hosed.

If you replaced it to prevent failure, then you may be right.

Pheonix · 05-03-2014, 04:49 PM

No just bought heavy duty replacement and we still think the cylinder is good because it does build some resistance after enough pumping.

Pheonix · 05-03-2014, 04:50 PM

air on the bleed, definitely

Pheonix · 05-03-2014, 04:50 PM

Nothing failed, I just bought a heavy duty replacement along with clutch and flywheel

JARblue · 05-03-2014, 04:51 PM

Quote:

Originally Posted by Pheonix

air on the bleed, definitely

ok then you just need to refine your bleed technique

1slow370 · 05-03-2014, 04:56 PM

ok if its new then yeah try pump it a few times, never push the pedal down past 3/4 of its travel, and crack and tighten the bleeder very quickly. so pump a few times hold it down and quickly crack and tighten the bleeder.

Pheonix · 05-03-2014, 05:02 PM

We gravity bled it with clutch popped out and not depressed and topped it off and clutch felt perfect. Friend wanted to bleed it one last time and can't get it right again. We're going to gravity bleed again and see if we can replicate. If we can, should we leave it?

JARblue · 05-03-2014, 05:27 PM

Sounds like a plan

Pheonix · 05-03-2014, 05:31 PM

Replicated but as soon as we started driving and took it out of gear the clutch got weak and would no longer go into gear. We're both at our wits end.

JARblue · 05-03-2014, 05:44 PM

Not sure what to tell you. It still sounds like a bleeding issue. When you say you are gravity bleeding, I'm familiar with this as a technique for one person to bleed the clutch. Are there not two people with you? One in the car on the pedal and one under the car operating the bleeder valve? I think you know the right process but just for $hits here goes:

With the bleed valve closed, pump the clutch pedal several times (I usually have my helper do it ~5 times). On the last pump, depress the pedal fully and hold, and at the same time crack the bleed valve briefly and the close. Repeat until no air comes out. I've used nearly an extra 1L of Motul before we got it right the first time. The last time it was much quicker.

zguynate · 05-04-2014, 11:04 AM

cluth master cylinder out?!?!?!?!?!

Im thinking its the CMC. It will build pressure to a certain point, then lose it all. There is no air in the line from what I cant tell when I open the bleeder valve. My hunch tells me CMC.

05-03-2014, 04:45 PM	#1 (permalink)
Pheonix Track Member Join Date: Aug 2009 Location: Memphis Posts: 626 Drives: Black 370 6MT Rep Power: 17	Desperate for clutch bleeding help Clutch bleeding tips PLEASE. Replaced CSC, clutch and flywheel. Got it to where it was full resistance and releasing completely. Feeling comfortable and took it for a test drive and halfway through started sticking closer to the floor and not disengaging fully...by the time I stopped and let my buddy have a feel it would no longer go into gear. We've been on the side of the road trying to bleed again now for 45 minutes. Does anyone have any bloody ideas? This thing won't build to full resistance again and we're both out of ideas __________________ "The line dividing good and evil cuts through the heart of every human being." - Aleksandr Solzhenitsyn

05-03-2014, 04:46 PM	#2 (permalink)
Pheonix Track Member Join Date: Aug 2009 Location: Memphis Posts: 626 Drives: Black 370 6MT Rep Power: 17	Thinking master cylinder is still good because it does still build resistance, just not full. Pumping slowly and steadily. __________________ "The line dividing good and evil cuts through the heart of every human being." - Aleksandr Solzhenitsyn

05-03-2014, 04:47 PM	#3 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Did your CSC fail? If so, did you replace the CMC? Are you just bleeding clean fluid at this point or does there still seem to be air in the system? __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

05-03-2014, 04:49 PM	#4 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	then ur csc is probably dead and no amount of bleeding will help it call AAA or your insurance. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-03-2014, 04:49 PM	#6 (permalink)
Pheonix Track Member Join Date: Aug 2009 Location: Memphis Posts: 626 Drives: Black 370 6MT Rep Power: 17	No just bought heavy duty replacement and we still think the cylinder is good because it does build some resistance after enough pumping. __________________ "The line dividing good and evil cuts through the heart of every human being." - Aleksandr Solzhenitsyn

05-03-2014, 04:50 PM	#7 (permalink)
Pheonix Track Member Join Date: Aug 2009 Location: Memphis Posts: 626 Drives: Black 370 6MT Rep Power: 17	air on the bleed, definitely __________________ "The line dividing good and evil cuts through the heart of every human being." - Aleksandr Solzhenitsyn

05-03-2014, 04:50 PM	#8 (permalink)
Pheonix Track Member Join Date: Aug 2009 Location: Memphis Posts: 626 Drives: Black 370 6MT Rep Power: 17	Nothing failed, I just bought a heavy duty replacement along with clutch and flywheel __________________ "The line dividing good and evil cuts through the heart of every human being." - Aleksandr Solzhenitsyn

05-03-2014, 04:56 PM	#10 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	ok if its new then yeah try pump it a few times, never push the pedal down past 3/4 of its travel, and crack and tighten the bleeder very quickly. so pump a few times hold it down and quickly crack and tighten the bleeder. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-03-2014, 05:02 PM	#11 (permalink)
Pheonix Track Member Join Date: Aug 2009 Location: Memphis Posts: 626 Drives: Black 370 6MT Rep Power: 17	We gravity bled it with clutch popped out and not depressed and topped it off and clutch felt perfect. Friend wanted to bleed it one last time and can't get it right again. We're going to gravity bleed again and see if we can replicate. If we can, should we leave it? __________________ "The line dividing good and evil cuts through the heart of every human being." - Aleksandr Solzhenitsyn

05-03-2014, 05:27 PM	#12 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Sounds like a plan __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

05-03-2014, 05:31 PM	#13 (permalink)
Pheonix Track Member Join Date: Aug 2009 Location: Memphis Posts: 626 Drives: Black 370 6MT Rep Power: 17	Replicated but as soon as we started driving and took it out of gear the clutch got weak and would no longer go into gear. We're both at our wits end. __________________ "The line dividing good and evil cuts through the heart of every human being." - Aleksandr Solzhenitsyn Last edited by Pheonix; 05-03-2014 at 05:33 PM.

05-03-2014, 05:44 PM	#14 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Not sure what to tell you. It still sounds like a bleeding issue. When you say you are gravity bleeding, I'm familiar with this as a technique for one person to bleed the clutch. Are there not two people with you? One in the car on the pedal and one under the car operating the bleeder valve? I think you know the right process but just for $hits here goes: With the bleed valve closed, pump the clutch pedal several times (I usually have my helper do it ~5 times). On the last pump, depress the pedal fully and hold, and at the same time crack the bleed valve briefly and the close. Repeat until no air comes out. I've used nearly an extra 1L of Motul before we got it right the first time. The last time it was much quicker. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

05-04-2014, 11:04 AM	#15 (permalink)
zguynate A True Z Fanatic Join Date: Jan 2012 Location: Strangeland Posts: 1,054 Drives: 09 370z Rep Power: 73	cluth master cylinder out?!?!?!?!?! Im thinking its the CMC. It will build pressure to a certain point, then lose it all. There is no air in the line from what I cant tell when I open the bleeder valve. My hunch tells me CMC. __________________ 2009 370z touring w/sports package

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