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. ;)

420A Oil leak

Posted by 609DSM, Dec 5, 2019

Please Support Morrison Fabrications
Please Support ExtremePSI
  1. 609DSM

    609DSM Proven Member

    181
    98
    Joined Aug 13, 2019
    Princeton, New Jersey
    I have an oil leak coming from the back driver side of the engine that sprays all over my exhaust my cross member and my transmission, I don't think it is transmission fluid (it's a m/t) I need to check my fluid levels for that and see what fluid I even have in there honestly.. but it seems to be the engine oil because when I do an oil change it's pretty clean and as time goes by after the oil dripping gets darker. Not sure if it's a rear main or input shaft, cant even figure out where it's coming from. I'm thinking using engine oil dye to find out maybe?
     

    Street Build 219  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
  2. dsmcrzy

    dsmcrzy Proven Member

    1,148
    237
    Joined Dec 20, 2009
    Trenton, Ohio
    Common places are the valve cover and the oil pressure sender in that area. Oil pressure sender is under the #4 cylinder intake runner.
     

    Street Build 4K  12

    1996 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
    BLACK'98DSM and 609DSM like this.
  3. 609DSM

    609DSM Proven Member

    181
    98
    Joined Aug 13, 2019
    Princeton, New Jersey
    Okay. Valve cover and head gasket have been replaced and sealed properly
     

    Street Build 219  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
  4. dsmcrzy

    dsmcrzy Proven Member

    1,148
    237
    Joined Dec 20, 2009
    Trenton, Ohio
    You followed the torquing steps for the valve cover and applied sealant where needed, correct?
     

    Street Build 4K  12

    1996 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
    609DSM likes this.
  5. BLACK'98DSM

    BLACK'98DSM Proven Member

    1,292
    437
    Joined Feb 9, 2019
    Hoover, Alabama
    If it is "spraying oil" then it is under pressure, not like the vc. Most likely is the pressure sending unit or main seal. Could also be the oil filter housing but that's closer to the passenger side. You can get both the sending unit and the socket for it from Rock Auto for $20.
     

    Road Race Build 2K  23

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM

    486  5

    2012 Murray Explorer Dune
    rwd · automatic · Misc Vehicles

    382  4

    2009 Troy Bilt Bronco
    rwd · automatic · Misc Vehicles
    Loading...
    609DSM likes this.
  6. 609DSM

    609DSM Proven Member

    181
    98
    Joined Aug 13, 2019
    Princeton, New Jersey
    Yes, I had to re use the gasket a couple weeks after I installed it because I replaced my head gasket, but I cleaned everything and reapplied the rtv where I'm supposed to. Pretty sure one of the bolts got stripped the inside passenger bolt... but I know my vcg isnt leaking because nothing is coming from the top of the head.
     

    Street Build 219  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
  7. 609DSM

    609DSM Proven Member

    181
    98
    Joined Aug 13, 2019
    Princeton, New Jersey
    Well I used that word improperly when describing this, it appears to spray because I dont have the undercarriage shield so wind gets up there and blows everything around, making it difficult to do a visual inspection because the oil is just everywhere.
     

    Street Build 219  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
  8. silvreclips

    silvreclips Proven Member

    1,065
    239
    Joined Jul 19, 2005
    Greenville, South Carolina
    I've never had good luck with oil dye helping me find any leaks. The best way I've found is to gain as much access to the engine as possible. I remove the trans braces and cross member, intake, etc. Clean the hell out of the block, then run it on jack stands for a while to get the oil hot and start wiping a paper towel around all the seals.

    I've found some hard to find leaks this way. I had a cam cap leaking between the cap and the head. Also had the trans fill plug leak bc it was so old. I ended running the car in gear on jack stands to find that one. The rubber grommets on the VC can leak. Also I don't ever reuse a VC. They always leak on me.
     

    Autocross Build 274  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
    dsmcrzy and 609DSM like this.
  9. Alchemy

    Alchemy Proven Member

    30
    4
    Joined Jun 13, 2019
    rock springs, Wyoming
    Sounds like pressure sending unit
     

    96  1

    1995 Eagle Talon TSi
    14.3 @ 95.5 · 2G DSM
    Loading...
    609DSM likes this.

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 RixRacing RockAuto SouthBay Fuel Injectors STM Tuned Track Decals Track Sculptures VR Speed Factory WheelWell.com