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420A Valve cover gasket leak

Posted by BLACK'98DSM, Jan 15, 2020

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  1. BLACK'98DSM

    BLACK'98DSM Proven Member

    2,236
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    Joined Feb 9, 2019
    Hoover, Alabama
    I know this has been asked over and over throughout the years, but I can't find what I'm looking for. Can someone please tell me the proper way to change the VC gasket? Ive done it twice, and it got better each time but I still have a small leakdown. I read that there is a specific sequence to tighten the bolts? Does anubody know this sequence? And I also read that some RTV needs to be used on certain parts? What parts does this need to be used on?

    By the way, the 2gnt links no longer work.
     

    Road Race Build 3K  10  25

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

    143  3

    2008 Tomberlin Crossfire 150R
    rwd · manual · Misc Vehicles

    182  6

    2008 Tomberlin Crossfire (325 swapped)
    rwd · manual · Misc Vehicles
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  2. Mello

    Mello Proven Member

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    Joined Jul 4, 2003
    Albuquerque, New Mexico
    FSM shows this
    upload_2020-1-15_21-52-22.png
    Recommend OEM or Felpro gasket. My best results appear to be when using Permatex Ultra grey. FSM does not indicate using any sealant on the 420A like on the 4G63 though.
     
    1990TSIAWDTALON and BLACK'98DSM like this.
  3. Widgmaster

    Widgmaster Supporting VIP

    293
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    Joined Aug 24, 2018
    Sarnia, ON, Canada
    I have three completely different diagrams in my Haynes Manual ..The first is.... oh crap .. I go to the bathroom for a leak and the nice gentleman above has answered your question... You can use RTV but sparingly , just enough to hold the gasket in place . So I took care of my leak and Mello took care of yours.
     

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    1977 Glastron Aqua Lift
    awd · automatic · Misc Vehicles

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    2002 Dodge Dakota Extended Cab
    rwd · automatic · Misc Vehicles

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    2001 Mitsubishi Eclipse Spyder GT
    fwd · automatic · Misc Vehicles
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  4. 1999RSfwd

    1999RSfwd Proven Member

    46
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    Joined Nov 24, 2016
    Dresden, Tennessee

    Street Build 233  2

    1998 Mitsubishi Eclipse GSX
    awd · manual · 2G DSM

    Street Build 138  1

    1999 Mitsubishi Eclipse N/T
    fwd · automatic · 2G DSM
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    BLACK'98DSM likes this.
  5. dsmcrzy

    dsmcrzy Proven Member

    1,563
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    Joined Dec 20, 2009
    Trenton, Ohio
    The 2gnt link is the way to go. I have never had a VC leak after following that.
     

    Street Build 4K  12

    1996 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
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    BLACK'98DSM likes this.
  6. Silver99OZ

    Silver99OZ Proven Member

    725
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    Joined Jul 8, 2010
    Burlington, New Jersey
    The 2gnt link is the best method. Permatex Ultra Grey works well. I have used both oem gasket kits and felpro on my car. I like the oem the best, but the felpro kit is pretty good as well. I would highly recommend replacing the rubber grommets that the bolts go thru as well.
     
    BLACK'98DSM likes this.
  7. BLACK'98DSM

    BLACK'98DSM Proven Member

    2,236
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    Joined Feb 9, 2019
    Hoover, Alabama
    Yea I bought new grommets as well. Fel-Pro everything.
     

    Road Race Build 3K  10  25

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

    143  3

    2008 Tomberlin Crossfire 150R
    rwd · manual · Misc Vehicles

    182  6

    2008 Tomberlin Crossfire (325 swapped)
    rwd · manual · Misc Vehicles
    Loading...

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