I just picked up my 1986 Vanagon Westfalia GL 2.1 from storage, where it has been for the past six months.  The engine started up fine, but it now has a sticky valve type sound on the driver side of the engine.  This noise was not there last fall when the Vanagon was put into storage.  

Is this something that has to be corrected right away, or is this something that will go away with time?  What could cause this noise from happening, right after longer term storage?

Your thoughts?
Stuart
Ottawa, ON

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