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Thread: NGK BR6's & miss fire

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  1. #1
    Join Date
    Aug 2007
    Posts
    754
    I put a bottle of heet in the tank and threw some other plug wires I had layin around on it and it seems to be doing ok now.

  2. #2
    Join Date
    Sep 2005
    Location
    Austin Tx.
    Posts
    13,138
    I had that when I had my plugs gapped too big. I regapped them a bit tighter and downlow it cleared up that stutter sound
    1951 3100
    1984 C10

  3. #3
    Join Date
    May 2009
    Location
    Plainfield, IL
    Posts
    2,036
    what did you have them gapped at? I'm with ducky on this one. The 'original' gap recommended for our trucks was for a platinum/iridium plug. When going to a copper plug, you typically have to close the gap down. I run around .035 on mine, and they seem to be pretty good. I'm running nitrous over boost, but should be close to the same gap (I would think)
    blown transmissions are about as useful as 97% of the guys on this forum

  4. #4
    Join Date
    Aug 2007
    Posts
    754
    These plugs come gapped @ .026 so I left em. I was told to run .025-.028 for boost.

  5. #5
    Join Date
    May 2009
    Location
    Plainfield, IL
    Posts
    2,036
    wow...br's are THAT much closer then the Ts? No clue then. I wouldn't go any closer then that lol
    blown transmissions are about as useful as 97% of the guys on this forum

  6. #6
    Join Date
    Aug 2007
    Posts
    754
    Lol yeah. I'm wondering if it needs the crank re-learn procedure. But there's no codes.

  7. #7
    Join Date
    Aug 2007
    Posts
    754
    I had at least one dead cylinder this morning for about 5 miles. Still no codes. Wouldn't you think there would be a random misfire code by now? Any suggestions on how to diagnose this?

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