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mavrik2747

01-06-2009 12:37 AM

Which spark plugs?

So I just bought an 05 screw fx4 and im starting all my mods but im going to service the engine as well, it has 52k miles on it. I figure now's a good time to refresh everything. So after I fight getting the old sparkplugs our and breaking them off and fighting to completely get them out (LOL, like I've read so much about on here), what set of spark plugs are good replacements, or do I just get the same?

rsho	01-07-2009 05:49 PM

Motorcraft these trucks seem to like those better

Bluejay

01-07-2009 06:01 PM

Motorcraft, the recommended one, a heat range colder.

che22879

01-07-2009 06:43 PM

are the autolites bad? Has anyone run them?

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