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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 05-09-2008
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time for tune up...what should i buy

just wondering what plugs and wires i should use on my 4.0...and no i dont want NGK, E3's or Bosch....im thinking to just stick with motorcraft or autolites but im just wondering if i should use autolite Xtreme Performance, Double Platinum or just the Platinum plugs...and what wires to get...thanx


Oh and i was wondering how can you tell if you have Iridium spark plugs that came stock in your truck...

Last edited by TrailRateThisFx4; 05-09-2008 at 06:14 PM.
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Old 05-11-2008
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I think you should stay with Motorcraft Plugs, and wires. I got my plugs for autoparts warehouse.com and my wires from rockauto.com I read on here too many people had problems when they mixed and matched plugs and wires.
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Old 06-19-2008
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Never use Bosch plugs in ANY ford. I see waaaaaay to many ford where owners did thier own plaugs changes and all Bosch's do are create check engine lights and missfire codes.
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Old 06-19-2008
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Go with the autolite extreme and get your wires from underdogperformance thats the combo to use
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Old 06-19-2008
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Go with Motorcraft double platinum, or fine wire platinum. For plug wires, I've had good luck from the NAPA custom wires made by Beldon.
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Old 06-19-2008
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Quote:
Originally Posted by ThwopKing View Post
Never use Bosch plugs in ANY ford. I see waaaaaay to many ford where owners did thier own plaugs changes and all Bosch's do are create check engine lights and missfire codes.
I have had Bosch Platinum 4s since 64000 miles. I now have 105000 miles and I haven't had a single problem with the plugs.
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Old 06-19-2008
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Quote:
Originally Posted by ThwopKing View Post
Never use Bosch plugs in ANY ford. I see waaaaaay to many ford where owners did thier own plaugs changes and all Bosch's do are create check engine lights and missfire codes.
I totally agree, Bosch plugs and Ford's EDIS don't play well together!

The previous owner of my Ranger had just put Bosch plugs in it when I bought it. Very shortly, it developed misfires, which was corrected by installing Motorcraft double platinums.
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Old 06-19-2008
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MOTORCRAFT Fine wire plugs are your best bet. Id run Motorcraft wires too.
Other than that, fuel filter, pcv valve, oil change, air filter...ect.
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