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header gasket leak

Discussion in 'Intermediate CJ-5/6/7/8' started by scbasspro, Apr 8, 2009.

  1. Apr 8, 2009
    scbasspro

    scbasspro Big Ed

    Chapin SC
    Joined:
    Nov 2, 2007
    Messages:
    63
    Does a header gasket leak cause popping and backfiring when decelerating? My CJ has a header gasket leak and I am sure that is the results.
     
    scbasspro, Apr 8, 2009
    #1
  2. Apr 8, 2009
    evanjm

    evanjm Yeah, it's got an F-head.

    Leesburg, VA
    Joined:
    Sep 13, 2006
    Messages:
    408
    If the leak is large enough, yes.

    Take your headers off and run down to your local machine shop and have them milled. Then just bolt them up dry with no gaskets right to the block, you'll be good to go.
     
    evanjm, Apr 8, 2009
    #2
  3. Apr 8, 2009
    jayhawkclint

    jayhawkclint ΜΟΛΩΝ ΛΑΒΕ

    Oklahoma City, USA
    Joined:
    May 18, 2006
    Messages:
    2,622
    Yes. I just cracked my headers out on the dunes a couple weekends ago. Big leak right at the flange, lots of popping when in gear on decel, and sometimes a big backfire inbetween gears if I let off the gas fast. Welded up the crack, all the popping/backfire went away.
     
    jayhawkclint, Apr 8, 2009
    #3
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