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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

spark plugs

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Old 11-21-2010, 12:38 AM
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when do you know your spark plugs need to be changed?
Old 11-21-2010, 02:50 AM
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id like to know too. i ask the dealer and they told me not to even worry till at lease 100k miles. seems extreme to me
Old 11-21-2010, 08:10 AM
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they are due at 100k but you can change them as often as you like.
personally i have 135k on mine and it still runs great, but the mpgs are starting to drop a little.



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