Ford F150 - Best Sparkplug for Fuel Economy?

Jeepmb · Posted: Thu Sep 04, 2008 7:20 am Post subject: Best Sparkplug for Fuel Economy?

After a recent spark plug change (which I knew were crap plugs but it was an emergency change) my mileage and performance has gone down. I know you get what you pay for, but what is your guys' recommendation for a good value spark plug for my 5.4L to get the fuel economy back up.

sbellinghausen · Posted: Thu Sep 04, 2008 8:12 am Post subject:

If you want original performance, get Motorcraft, any o'reilly has them so you don't have to pay ford prices. Autolite would prolly work fine too.

Mather · Posted: Thu Sep 04, 2008 8:57 am Post subject:

What brand of plugs did you put in?

darkdan · Posted: Thu Sep 04, 2008 8:57 am Post subject:

Believe it or not, cheap coppers.

Of course, they don't last nearly as long as double plats. Considering how much of a PITA it is to change the plugs I'll stick with the double plats myself.
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Dan The Oil Man

Mather · Posted: Thu Sep 04, 2008 9:10 am Post subject:

Hey Dan, Haven't heard from you for a long time. Where have you been?

PWRSTRKCMMNS · Posted: Wed Sep 10, 2008 10:30 pm Post subject:

AGSF-32 FM $2.89ea is what i run in my 97s and they work great..
they are platinum and they say they are pregapped! BUT ITS A LIE!!

gap them at .054 and you are good to go..

do it your self in 40 mins and 6 beers..
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97 Lariat F-150,Superchip pro., Moser 31spline axles,Eaton LSD,B&M ShiftPlus, K&N FIPK,Flowmaster Super 44 srs dumps. Precission 3.73's.Racing Tranny w/RedEagle clutches & Transgo-shift kit. Groundforce lowering kit 2-4.

97-XLT supercab 4.6 stock with 5 dollar intake and k&n stock rep. filter.

03-XLT Sscrew with sunroof. 4.6 stock with K&N stock replacement filter.(open box)
CUMMINS IS THE ONLY GOOD THING ON A DODGE.

jwt873 · Posted: Thu Sep 11, 2008 5:28 am Post subject:

Like sbellinghausen, I only use Motorcraft... Advance Auto Parts also sells them for less than Ford.

pete59edsel · Posted: Thu Sep 11, 2008 1:33 pm Post subject:

I have got the Autolite double plat in mine and they are good plugs.
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This is Ford country, and on a quiet night you can hear a Chevy rust.