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2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
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Old 08-28-2011, 08:43 PM
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4.6L spark plug issues????

hi guys,
My wife and I are looking at replacing her 05 liberty with an 06 explorer. Well I was just in the explorer forum and found a thread talking about the same two-piece plug design and breakage issues that us with our 5.4s have had to deal with. Well, I thought I had read in this forum that the 4.6L didn't have this problem. Did they put a different version of the 4.6 in the explorer than the f-150? I guess I need to know this so if it is a problem I can try to negotiate the plug change as part of the trade(it has 82,000). Thanks guys for any answers.
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Old 08-28-2011, 09:10 PM
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Its just the 5.4 3 valve.
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Old 08-28-2011, 09:40 PM
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Ok, here's a link to the thread. It just really confused me because I thought the 4.6L had a regular plug in it.

http://www.ford-trucks.com/forums/10...questions.html

these guys are talking about the same problems the 5.4 plugs have but in the 4.6L. What gives??
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2004 Supercrew Lariat 4X4 5.4L 3V
Rancho 999910 2" leveling Struts
275/70/18 Cooper Discoverer AT 3
Flowmaster Cat-Back Duals, 3" Stainless Steel Tips
"Where I grew up, we rode in trucks"
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Old 08-29-2011, 06:04 AM
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The Explorer 4.6L has 3 valve heads which may have the same problem as the 3 valve 5.4L. Until recently the truck 4.6L only came with 2 valve heads.
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Old 08-29-2011, 06:37 AM
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ok thanks. So if it is a 4.6L3V then it probably has this problem.
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"Where I grew up, we rode in trucks"
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Old 08-29-2011, 06:37 AM
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