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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Sun, April 25th, 2010, 12:12 AM
JWBFX4 JWBFX4 is offline
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Quote:
Originally Posted by ticopowell View Post
As far as i know, yes it is semi-normal. Because of a bad design of the top of the engine they are hard to get to, but you have 100,000 km, which is about 60,000 miles if im guessing right, then no that is low miles for plugs to be breaking.
Actually there have been a lot of reports of plugs breaking as low as 35,000 and I have seen some that have broke at 40,000. So its definitely normal.

But as Jack said the biggest thing is not to rush and follow the TSB exactly.
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