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Performance Upgrades - Maintenance - Modifications - Problem Solving - Off-Road - Street Trucks. Covering the Explorer, ST, Sport, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar. Featuring H.I. - Human Intelligence.
So I pulled my 4.0 replaced the timing chains, oil pump, water pump & the passenger side head. I had to replace the head because it developed a crack and started sucking coolant. The truck has 215k miles on it so I decided to pull the engine and replace the head & timing chains.. It's a good...