Diamond fire e3 spark plugs

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Thread: Diamond fire e3 spark plugs

  1. #1
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    Default Diamond fire e3 spark plugs

    I have an 02 4.7 and they worked fine for a month and then they gave me a bunch of misfire codes when the check engine codes were checked. I figured it was a coil I have 95000 miles on it. Replaced a few still stuttered and blinked a check engine. Went back to the autolites and the truck runs perfect. So steer clear of the Diamond Fire E3 spark plug.
    02 4.7 4x4
    4.5" Tuff country lift
    18x8 Pro comp rims
    33x13.5" MT ATZ's
    K&N filter
    Flowmaster Super 40

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  3. #2
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    Default Re: Diamond fire e3 spark plugs

    In the manual it specifies Denso or NGK. Stick with these brands or suffer the consequences.
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  4. #3
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    Default Re: Diamond fire e3 spark plugs

    I know but I'm a diehard watcher of horsepower TV and got suckered in the the (better mileage and bonus 3hp) hype. I just don't want anybody else to make this $55 mistake.
    02 4.7 4x4
    4.5" Tuff country lift
    18x8 Pro comp rims
    33x13.5" MT ATZ's
    K&N filter
    Flowmaster Super 40

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    Default Re: Diamond fire e3 spark plugs

    What was it that PT Barnum said was born every, 15 minutes was it?









    A joke, gsxr, a joke.

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    Default Re: Diamond fire e3 spark plugs

    get rid of the autolites too
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    Default Re: Diamond fire e3 spark plugs

    Yes, seriously, lose the autolites. Use Denso or NGK

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    Default Re: Diamond fire e3 spark plugs

    I used Autolites for a while, but the quality has really gone down hill. Ditto for Bosch too.
    Any fool can fix it right with lots of money.
    The cool thing to do is fix it right with the least amount of money.

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