Rev_Night

iTrader: (3)

Now before you scream clutch master/slave cylinder, hear me out. I have 2007 350z with 37K miles and two dealerships say that the volunteer recall/technical service bulletin of the slave cylinder doesn't impact me. Now my master/slave cylinder can still break even if there is no recall, which could certainly happen here. But what I dont get is if my cmsc is located in my engine top right, how is it dripping from the bottom middle? I have gone through two whole reservoirs of clutch fluid in the past 2 days, and the car was at rest the entire time. This is undoubtedly causing the sticky clutch pedal. Does this mean the clutch cylinders are just fine and its just a bad hose? How can I tell what is leaking when I dont understand what i'm looking at?

[B]Picture of Master Cylinder[B]


Picture of leak (car jacked up)


Picture of niiice

myfirstzcar

What is a cmsc?

faiz23

No clue what gibberish you are posting but what your are pointing at is not CMSC. Lets define CMSC which in your post means Clutch Master / Slave Cylinder. What you pointed to is the Clutch Master cylinder. The slave cylinder is on the side of the transmission towards the bottom of the car and If I am not mistaken on the driver side. If you are leaking towards the bottom then that would be either the clutch line or the slave cylinder. You need to track the leak and see where it is coming from. Clean that whole area up really good and monitor it for fresh leaks. Are you having to top off the clutch fluid often.

Edit: This only applies to 2003-2006 350z 6mt. 2007-2008 use an internal slave (CSC).

Rev_Night

iTrader: (3)

ok, i cleaned up the OP and got rid of acronyms. Yes, i am losing fluid, as I lost two reservoirs of clutch fluid over the past two days even though the car was at rest.

If it is the clutch line, then get a new braided line? It still is the stock rubber.

If it is the slave, then get a new slave? I assume that an OEM slave will work just fine with the OEM master. But how do I replace the slave cylinder? Ive searched these forums and google and I'm not getting alot of how-tos with pictures.

faiz23

My bad dude I did not pay attention to the fact that you have a 2007. The slave is internal to the transmission and that kinda makes sense to the fact where the fluid is leaking from. Your fluid is leaking from where the engine and transmission mate which means that is coming from the internal slave cylinder. I would push the dealership to replace the slave cylinder under warranty but they would want to pull the engine first and verify. As always bring plenty of lube to the dealership or just buy the aftermarket CSC and have it installed for about $1000 with parts and labor

http://www.conceptzperformance.com/C...107.213.162.72

http://www.notre350z.com/forum/files...ructions.1.pdf

http://specialtyz.com/blog/?page_id=1581

Rev_Night

iTrader: (3)

yeah, in my research i learned that for the 2007 and 2008, the slave is integrated into the tranny? Why? Idk, and neither does anybody else it seems. So that second link you posted was a great write up, and it looks a bit too hard/long for me. I am working out of my garage, and it would seem to get the tranny out would involve room that I dont have (and the nearest garage with a lift is 40 min away).

Curious though. Why are people paying to replace these? According to this NHTSA letter, the dealer must pay for it, or I get to tattle to Nissan. I'm glad I saw this letter, apparently both of those dealers that said 'no this isnt free we can fix for it you' were lieing. Hmmmmmmmmmmmmmm

Page 2
http://www-odi.nhtsa.dot.gov/acms/cs...24144-8745.pdf

myfirstzcar

Looking at your picture again I'm betting it's the slave.

Destroyeron

I think if you call Nissan with your VIN they can tell you if you're slave has already been replaced via the recall, which may be why the dealerships are telling you no.

zakmartin

Nissan never changed the design after the recall. They simply replaced the parts identified by the recall with new ones. It's a scam and Nissan got away with it. 2008 and 2009 model years have the exact same issue as the 2007s that got recalled. The only way you MIGHT get some action would be to see if you can get a consumer affairs reporter to go after them. The NHTSA isn't really interested in going after low-volume sports cars when they can improve their image by playing the the big government hero going after car models that famlies with kids drive around in.

For what it's worth, a UV dye leak detector is worth every penny when you're trying to source where leaks are coming from.

Also, I'm not trying to be a prude, but posting NSFW stuff in the maintenance forum isn't cool. Please keep those photos in the appropriate forums where they belong. Thanks.

Rev_Night

iTrader: (3)

I called Nissan1 and they said that my car already had the recall applied to it back in 2008, this was before I owned the car. Thankfully, the recall was performed at the dealer I bought the car from, so theres that. What I don't like is that Nissan said that the recall only covers the first fix. If it fails again, then its on me since its a part failure and it was replaced with an upgraded unit. But for the unit to fail twice at 37K miles? That's bs to me, and you guys confirmed it above when you said they replaced it with the same part.

Right now the dealer is doing the diagnostic and Nissan, to their credit, said they will escalate it to their regional manager once the diagnostic is done.

I'm going to be made, made i tell you, if i have to replace their shitty part. May just get the HD Wilford master/slave that people are talking about.

myfirstzcar

LOL them broads are hot man!

That fluid is clearly leaking out of the bell housing.

Rev_Night

iTrader: (3)

so its either two things: bad slave cylinder, or bad hose/connection to slave cylinder. Impossible to know which until the tranny is dropped and opened.

saywat?

damn internal slave that's gotta suck. good luck

Rev_Night

iTrader: (3)

thanks man. ill update with what the dealer said when they tell me tomorrow

Rev_Night

iTrader: (3)

Ok I just got a call back from the dealer. He said that the slave cylinder is indeed leaking, but without tearing out the tranny its impossible to say that exactly is causing the leak. He said that it could be the flywheel. If it is a bad flywheel, then it will cost me $2850. That's so ****ing rofl I dont know where to start. I sent the info to Nissan, their 'specialist' will call me back tomorrow.

myfirstzcar

How the frick would a flywheel be causing your slave to leak?...If it was somehow, you'd feel it.

Rev_Night

iTrader: (3)

yeppp. I know hes just naming random parts in the transmission just to increase the price. It doesnt matter, if nissan or dealer doesnt pay im taking it to a mechanic.

myfirstzcar

Hopefully you can find someone that won't try talking you into a new clutch and flywheel, if those pieces are still good right now.

travlee

iTrader: (8)

i feel your pain sir. i bought my 08 with 35k miles and within 6 weeks of buying it mine went out.. i yelled at dealership and they worked with me some but not much, replaced it with oem stuff.... fast forward a year and it went out again. i got the wilwood zspeed combo and had it installed.... never looked back. z1 made their own thing to eliminate the internal slave. might consider this when i finally do my clutch and flywheel

http://www.z1motorsports.com/350_g35...oducts_id=7340

dkmura

iTrader: (64)

As a racer with a HR-powered Z, I'd suggest you look CRITICALLY at the clutch line that comes down from the master cylinder to reach inside the bellhousing. The outer rubber cover can get hot and separate from the plastic inner line, which causes the metal connector to leak at the end.

The good thing is this part can be inspected (and replaced) without pulling the tranny. It happened to me last year at a race and brake fluid was leaking freely from the same area you're picturing. This particular line has heat shielding wrapped around it, but the heat from the tranny can degrade it anyway. It's not hard to check, so get the car up on jackstands and crawl underneath yourself. At least it doesnt cost anything...