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Re: 2001 4.0 engine noise
I have a 1992 4.0 that cratered at 36,000 miles. Rod came loose and block was replaced. 13 years later I can hear a slight crank noise sometimes but the engine has 157,000 miles now. Fords are known for that type noise in some of the 6 cyl. engines. Before I replaced the oil pump I would use a quart of Marvel Mystery oil in the engine to clean any clogged oil ports. I have no idea how tough replacing the oil pump is.
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