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    Timing Chain Tensioner 2004 SOHC

    Ford issued a technical service bulletin on the 4.0 SOHC, they have had huge issues with the timing chain tensioner system. IMO the engine designers made the timing chain set up the achilles heel of this engine. If you search the forum for SOHC timing chain, you will find a larger number of...
  2. S

    Timing Chain Tensioner 2004 SOHC

    New to the forum. I have a 2004 Explorer Sport Trac, bought it new and it has been one of the best vehicles I have ever owned. I recently noticed that I hear a light tapping noise when I first start the truck up in the morning, which seems to quiet up once the vehicle has warmed up. I’m...
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