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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
Never did valve covers on the 4.0. I have done them on a ford 3.0 and gm 3.1 and 3.8 all three of those are done with the upper and lower intakes in place
I left the fuel line in place. Just moved it out of the way. Had to undo a hose clamp under #4 spark plug. That was the worst part of the removal process. After the valve cover came off I could see where the oil was coming from. It's around the center bottom bolt. The gasket was hard and brittle. Probably from the heat of the engine, and being old.
Wayne.