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   AUTOMOTIVE      Anything to do with cars      2,177 messages   

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   Message 912 of 2,177   
   Mark Hofmann to Roy Witt   
   Re: Odd rumble in Durango solved.   
   18 Apr 12 10:59:02   
   
   RW> No. One could make an attempt to fix that by removing said lifter, take   
   RW> it   
   RW> apart and clean it, maybe replace the spring. As long as there is engine   
   RW> valve spring pressure on that weak lifter, it will leak down and need to   
   RW> be pumped up by engine oil pressure before the valve tap goes away.   
      
   My original engine didn't have that cold engine tap - so I guess they used   
   different parts on the Jasper rebuild.  Not a big deal, since this is really   
   minor and not causing a problem.   
      
   RW> You might want to re-think that. By going heavier with your oil, rather   
   RW> than lighter. The heavier the oil, the less likely the lifter will leak   
   RW> down. Give 10w-40 oil a try.   
      
   I'll give that a try.  It isn't easy to find synthetic in 10w-40 - most are   
   lower.     
      
   My thinking was since it doesn't do the "cold engine tap" when it is warmer   
   outside, the oil is more lean and can be pumped up quicker when you start the   
   car.     
      
   - Mark   
      
   --- WWIVToss v.1.50    
    * Origin:  http://www.weather-station.org * Bel Air, MD -USA (1:261/1304.0)   

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