1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

1G Bad oil seal?

Posted by blujeans, Sep 15, 2019

Please Support Fuel Injector Clinic
Please Support Morrison Fabrication
  1. blujeans

    blujeans Probationary Member

    22
    0
    Joined Dec 15, 2018
    Calgary, AB, Canada
    Recently took my intake pipe off to check on how my turbo was doing after installing it about 1000 KM ago to find lots of oil pooled up in the turbo’s inlet, as well as lots of oil in my intake piping. Could it be a bad seal in the turbo or something else?
     

    Attached Files:

    47  1

    2011 Mazda 3 GT
    fwd · manual · Misc Vehicles

    Street Build 463  4

    1991 Eagle Talon TSi AWD
    awd · automatic · 1G DSM
    Loading...
  2. wrencher

    wrencher Proven Member

    314
    30
    Joined Nov 20, 2005
    Chicago, Illinois
    More likely it from the crankcase vent tube from the valve cover.

    Your valve cover feed into the inlet like stock?

    This is why many run PCV check valves & catch cans.
     
    BLACK'98DSM likes this.
  3. blujeans

    blujeans Probationary Member

    22
    0
    Joined Dec 15, 2018
    Calgary, AB, Canada
    I run a catch can between the valve cover and the intake pipe yes. I don't have a check valve however
     

    47  1

    2011 Mazda 3 GT
    fwd · manual · Misc Vehicles

    Street Build 463  4

    1991 Eagle Talon TSi AWD
    awd · automatic · 1G DSM
    Loading...
  4. Boomdeeze

    Boomdeeze Proven Member

    1,626
    270
    Joined Jul 5, 2009
    Independence, Minnesota
    You don't want a check valve between the valve cover and the intake pipe, you only want one between the valve cover and intake manifold so you don't boost your crank case. You want the valve cover "vent" tube to be able to let crank case pressure out during boost but also fresh air in to the crank case when your PCV valve is drawing air during vacuum(idle/cruise) situations.

    What kind of catch can do you run? Is it an empty can or an actual oil separator?
     

    Street Build 4K  1

    1997 Mitsubishi Eclipse GSX
    10.793 @ 128.98 · 2G DSM
    Loading...
  5. blujeans

    blujeans Probationary Member

    22
    0
    Joined Dec 15, 2018
    Calgary, AB, Canada
    I just use an empty one from RTM racing
     

    47  1

    2011 Mazda 3 GT
    fwd · manual · Misc Vehicles

    Street Build 463  4

    1991 Eagle Talon TSi AWD
    awd · automatic · 1G DSM
    Loading...
  6. Bo0sTeD 4G63

    Bo0sTeD 4G63 Supporting Member

    307
    55
    Joined Aug 31, 2008
    Miami, Florida
    Check the turbo for shaft play, I had the same problem and when I rebuilt it had bad seals. Also check for oil on the exhaust side of the turbo by where the bolts hold the housing. Look for any oil stains or burnt oil in that area.
     

    Street Build 977  1

    1997 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM
    Loading...

Share This Page

Support Vendors who Support the DSM Community
Archer Fabrication ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing RockAuto SouthBay Fuel Injectors STM Tuned Track Decals Track Sculptures VR Speed Factory WheelWell.com