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LOUD Rattling knock TOP END

Discussion in 'Stock 1995 - 2001 Explorers' started by Explorer97n98, November 30, 2009.

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    1. Explorer97n98

      Explorer97n98 New Member

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      City, State:
      nashville tn
      Year and Model:
      1997 and 98 xlt
      I have a 98 exp OHC 4.0 has developed a very loud rattling knocking noise in top end of engine..What could help???
       
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    3. deernet

      deernet Member

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      City, State:
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      Year and Model:
      '97 Explorer Sport
      From my experience I would say you motor is probably about fried. How many miles are on it? Has the oil been changed regularly? Do you know if you might have taken any water into it?
       
    4. rhauf

      rhauf Well-Known Member

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      Dont those engines have issues with the timing chain tensioner? could be this. it's top end its probably not too serious (yet) just take the valve cover, off, and the timing covers, and look for the problem.
       

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