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ZETEC Performance (2000-2004) The place to chat about any 2.0L Zetec engine performance, tuning and exhaust related upgrades.
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09-22-2012, 06:58 PM
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Focus Enthusiast
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Denso Iridium plugs. Yay or nay?
So, the time has come to replace my spark plugs. I was thinking of going with Denso Iridium ones, because I hear they're great plugs. Any insight as to if this is true for my 2.0 Zetec?
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Focus Fanatic
Fan#: 1
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09-23-2012, 09:54 AM
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Where am I?
 
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Either stick with what the manufactor recommends or going with the Motorcraft or Autolite copper plugs. Other than that, you aren't going to see any significant increase using those plugs.
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Moderator for: Great Lakes Fanatics, Zetec Performance Chat, Wheels, Tires, Brakes & Suspension,Ford Focus & General Car Chat, Buy-Sell-Trade, General Forced Induction & Ecoboost and General Chat Lounge |
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09-23-2012, 10:19 AM
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Focus Enthusiast
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Thanks guys! I got a set of Motorcraft SP-463's coming now. Here's a related question... I've heard that fuel economy drops when using a copper plug. But the copper plugs are hotter, resulting in more fuel burn. Why is this? I mean, I'm not really that worried about losing an MPG here or there to make a little power, I was just wondering why that is.
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09-23-2012, 04:20 PM
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Focus Enthusiast
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I love the autolite 104's.
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04 Red Focus ZTS "Red Rocket" - FRPP kit, Cosworth CAI - Looking for Borla catback Sedan Revolution #203 96 Green Ford Thunderbird "Avocado"-It's got nitrous |
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09-24-2012, 12:03 AM
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R.I.P Kona
 
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Never heard of a loss in mpg when using copper plugs. I didn't see a drop.
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Team Focalize Hatch Nation #9 "Some people feel the rain, others just get wet" |
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09-24-2012, 10:48 AM
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Focus Enthusiast
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I got my Motorcraft SP-463's... The threaded part seems a little shorter than it should be. Should I be concerned? Or am I being a worry-wart?
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09-24-2012, 11:04 AM
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Focus Addict
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EDIT: BEWARE When you go to an auto parts store as I did and tell them SP-463 they may hand you plat tips. They did to me :( Can't afford 12$ right now to replace so...
 it for now 
__________________
-Liz- 2003 ZX5 Zetec 2.0L MPG Mod Euro-conversion (In Progress) <> KCCO <> Hatch Nation #666 <> Zetec Crew #666 <> Cars are like women: Treat them right and they give you pleasure; Beat them and they empty your wallet.
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