Spark Plugs and Ignition Coils | Ford Explorer Forums - Serious Explorations

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Spark Plugs and Ignition Coils

Diesel Tom

Active Member
May 8, 2015
Reaction score
City, State
Stone Mountain, GA
Year, Model & Trim Level
2007 Ford Explorer
I replaced the first set of spark plugs at 90K when I bought my 2007 Explorer (4.6L V8). I also replaced the ignition coil boots. The vehicle now has 153K and I have started getting P0308 trouble codes. I know its time to replace the spark plugs again, but my question is whether to replace the coils (and boots) this time as well.

Any particular brand of coils better than the others?


Just replace all the coil boots and use dielectric grease. Also put silicone on the cowl clips that stick into the engine bay.