Your valves may be just a tad too tight.
I've seen this on fresh engines.
The standard 2 turns on adjusting screws on hydraulic cams may just need
to be backed off 1/2 turn until you've gotten it warm a couple of times.
Best of luck!

On Sun, 20 May 2001 16:08:34 -0600 Steve Blackham <steph@uswest.net>
writes:
> I'm trying to tune up my freshly rebuilt 2 liter air cooled.  I can't
> get it to breath correctly.  I have disconnected the crankcase
> breather inlet, and aux air  valve at  the elbow but I still don't
> get what I consider good vacumn.  2 #s at idle at the throttle body
> and 6-7 #s at the distributor/ air distributor port.  Shouldn't my
> idle vacumn be around 10-15 #s?
>
> Any ideas?
>
> Thanks Steve
> --
> Steve Blackham
> Centerville, Utah
>
> 77 transporter converted to camper (Westy top)
> 83 Vanagon  (New and current project)
> 87 Weekender

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