Mushy clutch

SouthArk370Z · 06-17-2016, 11:49 AM

More than likely, JARblue is right about the MC leaking. Before changing, make sure the system has been flushed very well. Flush it until you think it's clean and then flush it some more. Otherwise, you will just suck the old "dirt" into the new MC and you're back where you started.

Dbaxter · 06-17-2016, 12:36 PM

Quote:

Originally Posted by SouthArk370Z

More than likely, JARblue is right about the MC leaking. Before changing, make sure the system has been flushed very well. Flush it until you think it's clean and then flush it some more. Otherwise, you will just suck the old "dirt" into the new MC and you're back where you started.

Will do, so before any installation of a new MC just make sure that the system has been flushed out to the point where theres no doubt its clean?! Thank you

SouthArk370Z · 06-17-2016, 03:24 PM

Quote:

Originally Posted by Dbaxter

Will do, so before any installation of a new MC just make sure that the system has been flushed out to the point where theres no doubt its clean?! Thank you

Yes. You have purged the lines of air (I'm assuming you did it correctly) and don't report any external leakage, so that pretty well narrows it down to internal leakage in the MC or CSC. IIRC, there's nothing in the CSC to bypass, but not sure. That leaves us with the MC. The most common cause of internal leaking is contaminated fluid. Brake/clutch fluid ain't cheap, but the volume is low, so go wild.

Depending on how much crud is in the system and just how anal you may be about such things, you may want to remove the lines and fittings and do a good bench cleaning before re-assembling - or replace them. Probably overkill.

Larso1 · 06-17-2016, 08:22 PM

It seems strange that a late model car should have so much trouble with such a simple thing as a clutch line with slave and master cylinders. I mean, they've been in existence since the early 1900's with good reliability, to the point I've personally never heard of an issue with them. My '97 Maxima has the original master and slave cylinders at 200k miles, only replaced the clutch. Maybe one master or slave on all of the manuals I've owned since the 1960's. Really weird...,

SouthArk370Z · 06-17-2016, 11:17 PM

Quote:

Originally Posted by Larso1

It seems strange that a late model car should have so much trouble with such a simple thing as a clutch line with slave and master cylinders. I mean, they've been in existence since the early 1900's with good reliability, to the point I've personally never heard of an issue with them. My '97 Maxima has the original master and slave cylinders at 200k miles, only replaced the clutch. Maybe one master or slave on all of the manuals I've owned since the 1960's. Really weird...,

My guess is that temperature plays a big part. Newer engines run a lot hotter than they did back in the 60s. With the undertray, the Z traps a lot of heat around the transmission which causes fluid to degrade faster. But, yeah, that's just a guess.

Elmo370z · 06-18-2016, 12:13 PM

Quote:

Originally Posted by Larso1

It seems strange that a late model car should have so much trouble with such a simple thing as a clutch line with slave and master cylinders. I mean, they've been in existence since the early 1900's with good reliability, to the point I've personally never heard of an issue with them. My '97 Maxima has the original master and slave cylinders at 200k miles, only replaced the clutch. Maybe one master or slave on all of the manuals I've owned since the 1960's. Really weird...,

Back then they made parts that would stand the test of time, people acutally gave a shyte. NOwadays its how can we make it cheap as possible.

Dbaxter · 08-16-2016, 01:16 PM

So I know it's been a while, still no luck so I'm going to be getting the z1 csc elimination kit and replacing the master cylinder. I will be upgrading my clutch as well is it recommended that I get a stage 2 or stage 3 clutch? I'm looking into a south bend

06-17-2016, 11:49 AM	#1 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	More than likely, JARblue is right about the MC leaking. Before changing, make sure the system has been flushed very well. Flush it until you think it's clean and then flush it some more. Otherwise, you will just suck the old "dirt" into the new MC and you're back where you started. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

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06-17-2016, 08:22 PM	#4 (permalink)
Larso1 Base Member Join Date: Nov 2015 Location: Pueblo CO Posts: 98 Drives: 12 Nissan 370Z T M6 Rep Power: 10	It seems strange that a late model car should have so much trouble with such a simple thing as a clutch line with slave and master cylinders. I mean, they've been in existence since the early 1900's with good reliability, to the point I've personally never heard of an issue with them. My '97 Maxima has the original master and slave cylinders at 200k miles, only replaced the clutch. Maybe one master or slave on all of the manuals I've owned since the 1960's. Really weird...,

08-16-2016, 01:16 PM	#7 (permalink)
Dbaxter Base Member Join Date: Aug 2015 Location: Fl Posts: 6 Drives: 2009/370z/black/m6 Rep Power: 10	So I know it's been a while, still no luck so I'm going to be getting the z1 csc elimination kit and replacing the master cylinder. I will be upgrading my clutch as well is it recommended that I get a stage 2 or stage 3 clutch? I'm looking into a south bend