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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.
Bad Intake Manifold
I had the very same problem on my 07 F-150. P0307. #7 Spark plug tube was filling with coolant and coolant was running low. When I removed the intake manifold I noticed a broken piece where the aluminum crossover seats up to the base of the intake, by the thermostat. Most...