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Old Nov 9, 2008 | 10:21 PM
  #1  
BigNiner19's Avatar
BigNiner19
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Spark Plugs

So I've read some disturbing news of an issue with spark plugs breaking off on some of the newer model F150's?

Does this apply to the 4.6 models as well? I have a 2004 4.6 XLT F150. I just hit 70,000 miles, and I'm pretty certain the plugs have never been changed.

What kind of plugs are best for these trucks? Is it a tough task? Will I break them off and be screwed like some of these horror stories I've read?

Cory
 
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Old Nov 9, 2008 | 11:40 PM
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you are in the clear. your 4.6 uses the conventional spark plug.

the 4.6 3v uses the newer style plugs. just change your plugs just like they've been done for the past 100 yrs.


I'd use the Autolites personally. Make sure their properly gapped (sorry, don't know it) and call it a day. Don't waste your money on fancy newfangled spark plugs
 
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Old Nov 10, 2008 | 12:58 AM
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When did a 4.6 go from 2V to 3V ? Mine is a 2004 new body style, not heritage...does that matter or factor at all?

Cory
 
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Old Nov 10, 2008 | 01:33 PM
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The 4.6L in the Mustangs uses the 3-valve heads. The 4.6L in the F150 kept the 2-valve heads.
 
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Old Nov 10, 2008 | 03:03 PM
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1994-2004
4.6 2v car motor

2005+
4.6 3v car motor


1997-2008
4.6 2v truck motor

2009+
4.6 2v truck motor
4.6 3v truck motor
 
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