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spark plug gap?

Discussion in 'Early CJ5 and CJ6 Tech' started by Dondo, Sep 20, 2004.

  1. Sep 20, 2004
    Dondo

    Dondo These are my good pants..

    Hutchinson, Kansas
    Joined:
    Jun 26, 2004
    Messages:
    314
    1985 Buick 3.8 V-6.

    What would the gap be?

    If the gap is wrong, would it backfire more?

    Dondo
     
    Dondo, Sep 20, 2004
    #1
  2. Sep 20, 2004
    James P. Enderwies

    James P. Enderwies Sponsor

    Lake Havasu City, AZ
    Joined:
    Feb 2, 2003
    Messages:
    747
    Dondo: You can't go wrong with .035. If you have HEI .040 is fine.
     
    James P. Enderwies, Sep 20, 2004
    #2
  3. Sep 21, 2004
    cide1

    cide1 New Member

    Joined:
    Jun 11, 2004
    Messages:
    39
    The book for 1980 Buick 231 says .060, but I think this is way too much. I put in Bosch platinums that are pre-gapped, and not intended to be adjusted. I have a backup set of AC Delco's that are gapped at .060 for spares (I cant imagine a spark plug failing on the trail, but wierder things have happend, and the P.O. threw them in for free when I bought the thing) If I had to put a number on it, .040 seems to be a good place to start.
     
    cide1, Sep 21, 2004
    #3
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