Changing Sparkplugs

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Thread: Changing Sparkplugs

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    Cool Changing Sparkplugs

    I have a 04 double cab V8 (4.7L) that has 140,000+ miles. I have never had any problems with gas mileage or engine running bad. I am a firm believer that if something aint broke don't mess with it, but which spark plugs do most of you guys go with in your 4.7s Just doing some research before making my mind up.

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    Supporter SuckersWalk's Avatar
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    Default Re: Changing Sparkplugs

    when you do a search here, you'll find that an overwhelming majority of us use OEM plugs.
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    Default Re: Changing Sparkplugs

    He means Denso I got mine from rockauto.com

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    Default Re: Changing Sparkplugs

    Yeah, Denso's or NGK's. Nothing fantastic like long life titanium or something crazy like that. Just the basic ones.

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    Default Re: Changing Sparkplugs

    I think the consensus is Japanese made plugs. No split fires or bosh multi fire plugs or whatever they call those things? Next time I will also try to do a better search as to not ask redundant questions.
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    Default Re: Changing Sparkplugs

    it's all good dude.

    get the denso"s for 2.00

    they r good for 30k

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    Default Re: Changing Sparkplugs

    Yup, I get the Denso's from the dealer when they have a 15 or 20%-off deal. I've also been changing them at 30,000 miles. They are cheap enough.

    I agree, the consensus from years ago was that/is that, we don't need anything other than the cheap plugs that Toyota has spec'd for our 4.7L's.

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    Default Re: Changing Sparkplugs

    OEM denso or ngk - the models listed in your owners manual for your engine. 05+ use iridium and again use the exact models listed in the manual or their manufacturers updated model number. Long life plugs have thicker electrodes than short life. I put a chart in a spark plug thread not so long ago that showed all toyota models and their respective plugs.
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    Default Re: Changing Sparkplugs

    If it ain't broke, don't bother fixing it philosophy can lead to other issues even though you believe your truck is running good. for example: just wait until you try to remove those plugs that have 140K on them the key word in "preventative maintenance" is preventative.
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    I'm a big fan of NGK, but then again I may be a bit biased because I work for them. I change my plugs usually about every 30-40k wether they need it or not. As previously mentioned, they tend to get a bit stubborn to remove after that.

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    Default Re: Changing Sparkplugs

    Make sure you use anti-seize on the threads of the plugs and coil bolts when you put it back together.
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    Default Re: Changing Sparkplugs

    Don't put anti-seize on NGK's, just Denso plugs. I like the NGK's. No problems at all for the last 13+ years. If you stay with the recommended plugs in your owner's manual (Denso or NGK), you can be sure that they match the resistance rating of your coils.

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    Default Re: Changing Sparkplugs

    Quote Originally Posted by INDYMAC View Post
    Don't put anti-seize on NGK's, just Denso plugs. I like the NGK's. No problems at all for the last 13+ years. If you stay with the recommended plugs in your owner's manual (Denso or NGK), you can be sure that they match the resistance rating of your coils.

    What's different about NGK plugs that they don't need antiseize?
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