Laser Iridium Plugs
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  1. #1
    PWCToday Newbie
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    Laser Iridium Plugs

    Hey guys. How long should brand new NGK Laser Iridium Plugs last in a Honda? F-12 Non Turbo.

  2. #2
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: Laser Iridium Plugs

    Most 4 strokes eat a set of plugs every 30 hours or so.
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  3. #3
    PWCToday Guru Ski dog's Avatar
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    Re: Laser Iridium Plugs

    I bought my 2002 F12 new. I changed the plugs once and now have 398 hours. Never had a plug failure.
    2002 F-12 (mine)
    2004 R-12 (son's)

  4. #4
    PWCToday.com Is My Home Away From Home Grumpy Old Guy's Avatar
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    Re: Laser Iridium Plugs

    They run till they fail.

  5. #5
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    Re: Laser Iridium Plugs

    Nice. Thanks.

  6. #6

    Re: Laser Iridium Plugs

    Quote Originally Posted by Honda1980 View Post
    Nice. Thanks.
    plugs should last 200 hours or so.. they could last 400.
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  7. #7
    PWCToday Guru skidoc's Avatar
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    Re: Laser Iridium Plugs

    In the Honda Aquatrax you need to replace them every year... The foul for short starting the engine.
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  8. #8
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    Re: Laser Iridium Plugs

    Quote Originally Posted by skidoc View Post
    In the Honda Aquatrax you need to replace them every year... The foul for short starting the engine.
    I have found this rule to be true. If I have less that 50 hours, I try to just clean them up. New plugs always get me a few more RPM and those are steady (does not hunt at highest RPM).
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