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Thread: Slave Cylinder Leak? Just looking for confirmation before parts order.

  1. #1
    Join Date
    May 2017
    Location
    NJ
    Posts
    158
    My Cars
    '13 328i / '95 325i Vert

    Slave Cylinder Leak? Just looking for confirmation before parts order.

    Hey Guys,

    This is a basic one and I have searched just looking for a confirmation since I cannot clearly see where the leak is coming from and wont be able to get under the car till next week.

    Does this sound like the "Slave Cylinder" is leaking?

    Today I noticed some fluid on the floor of my garage... When wiping it up with a paper towel it looked to be a brownish color on the lighter side... I run LiquiMoly oil which is kinda
    greyish/black in color so I am pretty sure its not my oil also I did an oil pan a few weeks ago and there was no oil by the flywheel it was bone dry so I dont think its my rear main seal.

    [ I had an oil pan leak, So before cleaning there was no way to decipher 2 diff leaks ]

    When your slave cylinder leaks is it common to drip down the bell housing and almost appear like its coming from between the engine and trans??

    At first im like shit REAR MAIN SEAL but then it didnt look like motor oil, Another sign im thinking its the slave cylinder is that my car is an OBD1 Vert.
    They have a metal skid plate underneath thats painted black, I noticed where this fluid has landed and sat on my skid plate has made the paint bubble
    up and peal right off. Now im pretty sure brake fluid will eat paint, Not oil.

    Any info would be greatly appreciated, Hoping to take a closer look next week.
    Last edited by QUiKSR20; 06-10-2018 at 12:35 AM.
    13 F30 328i Sport 6MT
    95 E36 325i Vert 5MT
    92 Sentra SE-R SR20DET DET Build Thread
    08 E90 328i Sport [sold]
    89 E30 325is [sold & missed]

  2. #2
    Join Date
    May 2012
    Location
    Central Wisconsin
    Posts
    640
    My Cars
    '94 325i, '93 325is
    Brake fluid will bubble paint, sounds like you are on the right track, it would likely be dripping out the drain hole in the bottom of the bellhousing.
    '94 325i Sedan, Arctic Gray: UUC LTW FW, EVO 3 and DSSR, +.020 Maxsil pistons, ASC delete, Eibach shocks/springs, 16" contour reps 238k
    '93 325is Coupe, Schwarz, work beater 299k
    '89 325i Vert, Alpine White: 5spd swapped. Sold
    '04 Toyota Sienna XLE Limited AWD, In progress swapping to M50/G250, http://www.wibimmers.com/board/index...nna-25i-build/
    '05 Volvo V70 R, 6mt, mostly stock, kid hauler 200k Sold
    '85 Toyota LandCruiser: Lifted, gas hog. 205k

  3. #3
    Join Date
    May 2017
    Location
    NJ
    Posts
    158
    My Cars
    '13 328i / '95 325i Vert
    Well tonight I put the car up on jack stands and didn't notice much visible wet besides the bottom of the bell housing.
    Pulled the SLAVE Cylinder and found my problem ( as suspected ) The rod can be pushed side to side almost like its
    broken inside and fluid will pour right out of the seal..

    IMG_1024.jpg
    13 F30 328i Sport 6MT
    95 E36 325i Vert 5MT
    92 Sentra SE-R SR20DET DET Build Thread
    08 E90 328i Sport [sold]
    89 E30 325is [sold & missed]

  4. #4
    Join Date
    May 2012
    Location
    Central Wisconsin
    Posts
    640
    My Cars
    '94 325i, '93 325is
    It's normal that the rod is loose side to side. It should not be leaking though.
    '94 325i Sedan, Arctic Gray: UUC LTW FW, EVO 3 and DSSR, +.020 Maxsil pistons, ASC delete, Eibach shocks/springs, 16" contour reps 238k
    '93 325is Coupe, Schwarz, work beater 299k
    '89 325i Vert, Alpine White: 5spd swapped. Sold
    '04 Toyota Sienna XLE Limited AWD, In progress swapping to M50/G250, http://www.wibimmers.com/board/index...nna-25i-build/
    '05 Volvo V70 R, 6mt, mostly stock, kid hauler 200k Sold
    '85 Toyota LandCruiser: Lifted, gas hog. 205k

  5. #5
    Join Date
    May 2017
    Location
    NJ
    Posts
    158
    My Cars
    '13 328i / '95 325i Vert
    Quote Originally Posted by jc43089 View Post
    It's normal that the rod is loose side to side. It should not be leaking though.
    Good to know, Either way its shot hahha if i push that rod in any direction fluid pours out hahah.
    13 F30 328i Sport 6MT
    95 E36 325i Vert 5MT
    92 Sentra SE-R SR20DET DET Build Thread
    08 E90 328i Sport [sold]
    89 E30 325is [sold & missed]

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