The #1 Ford Explorer enthusiast resource for over 25 years!
Performance Upgrades - Maintenance - Modifications - Problem Solving. Covering the Explorer, ST, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar.
Does anyone know the proper gapping width for a 4.0 set of motorcraft spark plugs.
Join the Elite Explorers for $20 each year. Elite Explorer members see no advertisements, no banner ads, no double underlined links,. Add an avatar, upload photo attachments, and more!.
i use .54 gap. i think the proper gap is printed on a decal in the engine compartment where the latch to the hood is. it shows the vacuum routing at the bottom it tells you the proper gap.