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Oil Leaking, Front diff Breather?

Discussion in '1st Gen. Tacomas (1995-2004)' started by jwscoot, Dec 3, 2008.

  1. Dec 3, 2008 at 4:03 PM
    #1
    jwscoot

    jwscoot [OP] Well-Known Member

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    Mississauga, ON
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    98 Tacoma v6 4x4
    Bilstein 5100 shocks all the way around, add a leaf in the rear
    Anyways, oil is leaking out of the breather for the front diff and making a mess of everything around there.

    I've checked, the level its fine (not overfilled) and it's not leaking anywhere else.

    anyone know whats going on and how to fix it?, snows coming soon and I don't want to blow out my diff or have to go under it all the time to top it up.

    thanks.
     
  2. Dec 3, 2008 at 4:12 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
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    Could be plugged a little bit. Take it off and clean it with some brake cleaner and compressed air.
     
  3. Dec 3, 2008 at 4:24 PM
    #3
    jwscoot

    jwscoot [OP] Well-Known Member

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    Bilstein 5100 shocks all the way around, add a leaf in the rear
    I did do that the last time I checked and cleaned everything up. Then checked the function with my mouth, seems to be working fine... I'm really stumped...
     
  4. Dec 3, 2008 at 4:32 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Only other thing I can recomend is to replace the breather. :confused:
     
  5. Dec 3, 2008 at 5:02 PM
    #5
    TacomaHarry

    TacomaHarry Well-Known Member

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    I had a problem with the breather cap being too tight and not releasing air pressure from inside the front diff. Like when I went through deep water with a hot diff and the cold water cooling the diff rapidly created additional air pressure in the housing. Then causing my axle seals to leak.
    After having the dealer fix the third leaky seal I found the problem for them. :rolleyes:

    You may want to try blowing through it, to see if it releases air.


    I loosened the caps on mine and extended to hoses up behind my brake mastercylinder.

    Not sure if this will fix your probelm, but it's worth looking at.
     
  6. Dec 3, 2008 at 5:35 PM
    #6
    Toy4Life

    Toy4Life 668: The Neighbor of the Beast

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    92 4Runner SR5 3.0v6 4x4(sold) 02 Tacoma SR5 TRD Offroad 4x4 (sold)
    Do the breather extension and put an in-line fuel filter at the end. It will allow the differential to remain neutral instead of building any pressure.
     
  7. Dec 3, 2008 at 6:05 PM
    #7
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Best fix, yet! :)
     
  8. Dec 3, 2008 at 7:12 PM
    #8
    Janster

    Janster Old & Forgetful

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    From my elder taco years, I've heard of other people have the same problem. It's almost like the design of the diff coupled with breather position - the venting process takes some oil with it.

    You could extend the breather longer & higher and make sure the breather cap is clean and unobstructed.

    That way, when it does vent....the oil will go up the tube but eventually drain back down (and you won't lose any oil). On my 96 tacoma, I actually extended both my breathers. They both were T'd together at the clutch MC.
     
  9. Dec 3, 2008 at 8:35 PM
    #9
    jwscoot

    jwscoot [OP] Well-Known Member

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    Bilstein 5100 shocks all the way around, add a leaf in the rear
    thanks guys I will extend the line, maybe put a catch can or something in there to see if the oil is making it up that high.
     
  10. Dec 3, 2008 at 11:51 PM
    #10
    Janster

    Janster Old & Forgetful

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    Don't worry about it..... If you put a catch can in there, then the oil can't drain back into the diff.
     
  11. Dec 4, 2008 at 9:18 AM
    #11
    jwscoot

    jwscoot [OP] Well-Known Member

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    Bilstein 5100 shocks all the way around, add a leaf in the rear

    good point. I'm sure you could get creative and build one with a drain-back or something.

    I'll just extend it for now, hope that is suffice.
     
  12. Aug 9, 2012 at 10:08 AM
    #12
    dbbyleo

    dbbyleo Member

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    Hello... I may need to check my breather cuz I'm seeing some minor seepage around the front diff (driver side). But can you guys tell me how and where to check for the line and cap? I'm not a newbie DIY... just never with this diff issue.

    Thanks.
     
  13. Aug 12, 2012 at 1:24 AM
    #13
    x2468

    x2468 Well-Known Member

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    Need to try this front and rear. Ive had a pretty good leak in the front driver side and a tiny leak at the rear pinion seal. Hope plugged diff breathers is the reason.
     
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