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The Ford Ranger 4.0 may experience coolant leaks due to a blown head gasket or a hole in the radiator. It's recommended to replace the spark plugs every 100,000 miles, except for copper ones, which should be replaced every 30,000 miles. Your air filter should be replaced every 15,000 to 30,000 miles, and the coolant should be changed every 60,000 miles. Engine-related issues may arise, such as loose gaskets that need to be tightened, spark plugs popping off, and the engine overheating, which can lead to fires and explosions. Keep an eye out for excessive oil consumption, oil leaks that require immediate attention, and the need for more frequent oil changes than usual.
Inspect the pan for any cracks or damage, and examine the lines for signs of decay. If that doesn't resolve the issue, bring it to the shop for further inspection.
Typical reasons for coolant leaks range from minor issues like a damaged oil cooler or coolant lines to more serious problems such as a cracked head or damaged head gasket.