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Miles Between Plug Change

Discussion in 'Early CJ5 and CJ6 Tech' started by mickeykelley, Jun 22, 2019.

  1. Jun 22, 2019
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    How many miles do you guys go between plug changes? I'm not at that point yet, but a curiosity thing. I'm so in the mode of modern cars where plugs last forever.
     
    mickeykelley, Jun 22, 2019
    #1
  2. Jun 22, 2019
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    What does Jeep recommend?
     
    timgr, Jun 22, 2019
    #2
  3. Jun 22, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    When I drove my wagon to work I think I put about 10,000 miles on a set of plugs before I changed them The 226 uses the same plugs as the F-head. CJ5 driving over the years has been more sporadic so I can't give a mileage estimate. I would think that mileage isn't going to be a concern compared to the type of driving you'll probably encounter.
     
    Glenn, Jun 22, 2019
    #3
    Twin2 likes this.
  4. Jun 22, 2019
    jeep2003

    jeep2003 Well-Known Member

    Upstate NY
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    Speaking of plugs I think i put mine in 11 years ago and 7000 miles in the V6. Im running autolite 85 . Id like to try a cooler plug because i get dieseling sometimes. I have some AC R45s would that be better? What would you recommend
     
    jeep2003, Jun 22, 2019
    #4
  5. Jun 22, 2019
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    I know the FSM states to check every 6,000 and replace as needed. I was just curious with spuratic driving that I think most of these get now, what people are experiencing.

     
    mickeykelley, Jun 22, 2019
    #5
  6. Jun 22, 2019
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
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    Jul 30, 2003
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    Why fix something that isn't broke ?
    Pull them out at 10k and inspect.
    If okay stick them back in.
     
    jpflat2a, Jun 22, 2019
    #6
    dane71 and Twin2 like this.
  7. Jun 23, 2019
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    Yeah, it's a pretty simple item. Easy to see when they are getting burned out.
     
    PeteL, Jun 23, 2019
    #7
  8. Jun 23, 2019
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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    Sep 22, 2002
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    In the old days the main reason for changing plugs so often was the lead in the fuel fouled and carboned up the plugs. Nowadays that problem is long gone. Realistically you should be able to get at least 20,000 miles out of a set of plugs unless your engine is really worn and having blowby issues.
     
    Mcruff, Jun 23, 2019
    #8
  9. Jun 23, 2019
    jeepstar

    jeepstar Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sheboygan
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    I change mine at the start of jeep season.
     
    jeepstar, Jun 23, 2019
    #9
  10. Jun 23, 2019
    65seejayfive

    65seejayfive Blazin’ new trails

    Pennsylvania
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    Apr 10, 2018
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    As cheap as they are and with only 4 cylinders I tend to do this too. Not sure how many miles I rack up in that time but probably not a whole lot.
     
    65seejayfive, Jun 23, 2019
    #10
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