plug blowouts
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Elder User
Joined: Oct 2006
Posts: 835
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plug blowouts
ok ok... what years are affected by the blowouts...i meen ive gotta 04 sd with the 5.4 2v heads....from what ive read im safe...but theres nothing i can do to prepare for it ...except maybe lube myself.. =) am i safe..send some good news my way please!!!!
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Joined: Apr 2003
Posts: 46
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From: nw pennslyvania
yes they where replaced.after the first one was repaired (it was the original plug)the other 7 where removed,inspected,anti-seazed and re-torked to specs.it lasted 10,000 miles.funny how ford redesigned the heads after everyone had problems with this.3 threads on a aluminum head is pretty thin.i think it was 05 -06 that they fixed this,not 03 as previose said 
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Elder User
Joined: Oct 2006
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well can anybody else chime in on the year they were changed..i know in 05-06 they started using the 3v heads.. but ive read elsewhere that they added more material to the plug areas
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Joined: Dec 2001
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From: Louisville,Ky.
04 was the first year for the 3V head on the 5.4L. There were more threads added to the 2V heads in mid to late 02.
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Junior User
Joined: May 2006
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From: Tucson
Jiminpa2 of course they redesigned the heads same as everything else when there is a problem part of the reason why when a new type of vechile comes out you should wait for after a few years of production for them to work the kinks out.
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Joined: Nov 2006
Posts: 4,517
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From: SE Wyoming
The best way to prevent it is to keep your plugs changed every 60K on an N/A engine and probably every 30K on a blown engine. My understanding is '03+ have 8 thread heads but it wouldn't surprise me if Ford had some leftovers from '02 and early '03s still had 4 thread heads. Also if you hear them start to tick you have a matter of minutes before the plug spits.
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Joined: Jul 2002
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From: Long Island USA
"Long thread heads" were introduced for 2-valve 4.6/5.4/6.8 in November 2002, at the Windsor engine plant. November 2003 for Romeo 2-valvers.
This is from Ford documentation I got from a reliable source
Interesting thing is my 2001 V10 (manufactured 9/2000) appears to have long-thread heads and never been serviced. Still have to re-check that.
This is from Ford documentation I got from a reliable source
Interesting thing is my 2001 V10 (manufactured 9/2000) appears to have long-thread heads and never been serviced. Still have to re-check that.
