When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
03 Ranger 4.0 SOHC owners manual says .052 to.056 and sticker under hood says .062 to .068. I am changing plugs and don't know which gap to use. Thanks
I'd go by the under hood emissions decal, as it's likely to be a more up to date publication.
Be sure your using at least the specified double platinum type plug, for our waste spark ignition system.
The newer fine wire iridium enhanced center electrode plug, with a platinum pad side wire is a good long lasting replacement choice, as these plugs should maintain the set gap longer.
Use a Wire type feeler gap gauge to set the gap & be careful not to damage the center or platinum pad on the ground electrode. Be gentle pulling the feeler through the gap.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.