Before Changing Your Spark Plugs Read This TSB - Power Hungry Performance Forum

		Power Hungry Performance Forum > Ford F-150, Expedition, Navigator, Blackwood, Mark-LT, SVT Lightning and H-D Editions (Disabled) > 2004 to 2008 F-150 and Mark-LT
Before Changing Your Spark Plugs Read This TSB

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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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#11

Fri, December 11th, 2009, 11:19 PM

88Racing 88Racing is offline

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Quote:

Originally Posted by Ideal150

ok sounds good. did u replace with stock ones or upgraded to something different? I know its a different topic but just curious if they make a big difference.

The best recomendation I can offer through the research I did is stick with motocraft.
Some other have tried champions or autolites and ended up doing them again after 10k-20k.

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