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  1. 1973Guppie

    1fz spark plug loosening

    thx for your comments, agreed, it it loosens again I will be going this route.......
  2. 1973Guppie

    1fz spark plug loosening

    It actually can. Others have done it. You can use an insert.
  3. 1973Guppie

    1fz spark plug loosening

    you might be on to something, I am having some spinal problems and need to have surgery, have lost some strength in my arms in the past 6 months.
  4. 1973Guppie

    1fz spark plug loosening

    that was today, I put another few pounds on it, so no in the past it was not overtightened.
  5. 1973Guppie

    1fz spark plug loosening

    not likely as I have owned it for a long time and have never overtightened it. Threads seems fine as it take fsm torque but later comes loose. Like I said before, new plug makes no difference.
  6. 1973Guppie

    1fz spark plug loosening

    yes, yes, no
  7. 1973Guppie

    1fz spark plug loosening

    Hi Folks, thought I would post up with an issue I am having on my personal truck. 1996 FZJ80. Plug #4 keeps loosening for some reason. It seems about every 5k miles I get a rough idle and yup each time the plug is loosened in the block. A few turns of snugging it up solves the problem. I am...
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