MPG After Spark Plug Re-Gap....

This is a discussion on MPG After Spark Plug Re-Gap.... within the F150 Ecoboost Performance forums, part of the F150 Ecoboost Garage category; Have you guys who re-gapped your factory plugs noticed any increase in mpg?...

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Thread: MPG After Spark Plug Re-Gap....

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    Eco-Beast OxfordFX4's Avatar
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    MPG After Spark Plug Re-Gap....

    Have you guys who re-gapped your factory plugs noticed any increase in mpg?

    2013 F150 FX4 SuperCrew Cab
    3.55 rear gears, 5.5' bed, S&B Intake, 4" Flo-Pro Cat-Back, MBRP 5" Tip, Amber Rigid Dually Spot Lights, L.E.D. Exterior Lighting, Silverstar Ultra Fogs, 8" Alpine Sub, 275/70/18 E rated Cooper ST Maxx tires

    Bryan Bowles



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    Ecoboost Sr Member theocoog's Avatar
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    I replaced my factory plugs at 55,000 miles with Motorcraft SP-534 plugs gapped to 0.028". It may have picked up a 1/2 mpg, but more importantly, the new plugs made the truck run MUCH smoother across the power band and idle nicer too. All hesitation gone.

    The problem was that the stock plugs were gapped inconsistently: 6 plugs, 6 different gaps ranging from 0.027" to 0.040". Apparently this is a pretty common problem, and worth fixing before adding a tune. I guess Ford had a quality control problem in 2011.
    2011 F150 3.5L EcoBoost XLT 4x4 Off-Road, 3.73 ELD, 6.5' Bed, Dark Blue Pearl Metallic

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    Eco-Beast OxfordFX4's Avatar
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    Thanks for the feedback.

    I was unsure if it effected all years of Ecoboost's or just one.

    I also didn't want to tear my plugs out on a brand new truck for no reason. Now I have one....

    Lol

    2013 F150 FX4 SuperCrew Cab
    3.55 rear gears, 5.5' bed, S&B Intake, 4" Flo-Pro Cat-Back, MBRP 5" Tip, Amber Rigid Dually Spot Lights, L.E.D. Exterior Lighting, Silverstar Ultra Fogs, 8" Alpine Sub, 275/70/18 E rated Cooper ST Maxx tires

    Bryan Bowles



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    Eco-Beast 2Canches's Avatar
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    Is 25,000km a good time to pull plugs?
    LET 89 tuned
    AFE stage 2 intake
    wagner IC
    solo catless O/R DP
    3" straight pipe
    stock muffler
    black painted exhaust tip (the money maker)


    http://www.f150ecoboost.net/forum/6-...se-league.html

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    Eco-Beast OxfordFX4's Avatar
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    I think most factory service intervals are 100,000 miles. You can cheat and look at the maintenance schedule in your owners manual....

    2013 F150 FX4 SuperCrew Cab
    3.55 rear gears, 5.5' bed, S&B Intake, 4" Flo-Pro Cat-Back, MBRP 5" Tip, Amber Rigid Dually Spot Lights, L.E.D. Exterior Lighting, Silverstar Ultra Fogs, 8" Alpine Sub, 275/70/18 E rated Cooper ST Maxx tires

    Bryan Bowles



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    Ecoboost Pro outlaw25's Avatar
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    Every time I've gone by the manufacturers suggested plug replacement I've found my plugs to be way beyond where they should have been changed.
    I usually go no more then 20K.

    Although my other truck has 140K and I don't remember the last time I changed them

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    Ecoboost Pro brian351w's Avatar
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    do you think 4,200 miles is to soon to pull the plugs ?
    maybe i should wait until i atleast take it to the dealer for first oil change then pull them.
    i would like to know how accurately they are gapped and also coat the threads with some anti-sieze
    i use anti sieze on everything i take apart without fail the stuff is awsome and no good hand cleaner takes it right off your hands and face too
    it seems no matter what, if you just look at and touch the bottle it is on you somewhere.
    2013 XLT Flame Blue Metallic 4x4

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    Ecoboost Jr Member ecostroke's Avatar
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    Quote Originally Posted by brian351w View Post
    do you think 4,200 miles is to soon to pull the plugs ?
    maybe i should wait until i atleast take it to the dealer for first oil change then pull them.
    i would like to know how accurately they are gapped and also coat the threads with some anti-sieze
    i use anti sieze on everything i take apart without fail the stuff is awsome and no good hand cleaner takes it right off your hands and face too
    it seems no matter what, if you just look at and touch the bottle it is on you somewhere.

    So exactly what are you waiting on for that first oil change? You said it has 4,200 on it, you are only ummmm 1,200 miles late.

  9. #9
    Eco-Beast OxfordFX4's Avatar
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    Calm down man. Lol

    2013 F150 FX4 SuperCrew Cab
    3.55 rear gears, 5.5' bed, S&B Intake, 4" Flo-Pro Cat-Back, MBRP 5" Tip, Amber Rigid Dually Spot Lights, L.E.D. Exterior Lighting, Silverstar Ultra Fogs, 8" Alpine Sub, 275/70/18 E rated Cooper ST Maxx tires

    Bryan Bowles



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    Eco-Beast 2Canches's Avatar
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    I'm assuming I should pull the plugs & have a look & gap them .30 then. Ok thanks folks
    LET 89 tuned
    AFE stage 2 intake
    wagner IC
    solo catless O/R DP
    3" straight pipe
    stock muffler
    black painted exhaust tip (the money maker)


    http://www.f150ecoboost.net/forum/6-...se-league.html

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