On 24-May, 2011, at 10:48 , Azie L. Magnusson wrote:
> I think you have a
> collapsed or stuck lifter!! Pull a valve cover on the side
> that the 'Knock' is most prominent & check to see if
> one rocker is loose while you have the engine idleing!!
> If it is a lifter - it is an easy & cheap fix....
I forgot about hydraulic lifters... Too much time under the Cummins' hood - that certainly would be about right.
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